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		<title>TidBITS: Comments on Preventing Duplicate Calendar Events in iPhone OS 3.1</title>
		<link>http://www.tidbits.com/</link>
		<description>The details of how iTunes and MobileMe syncing work keep changing through successive versions of the iPhone OS. "Take Control of Syncing Data in Leopard" author Michael E. Cohen explains how each version has worked, and how to prevent duplicate calendar events from appearing on your iPhone or iPod touch.</description>
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		<copyright>Copyright 2009 TidBITS Publishing Inc.</copyright>
		<pubDate>Mon, 14 Jun 2010 15:46:28 PDT</pubDate>
		<lastBuildDate>Mon, 14 Jun 2010 15:46:28 PDT</lastBuildDate>
		<managingEditor>editors@tidbits.com (TidBITS Editors)</managingEditor>
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			<title><![CDATA[Comment from Rick Barry]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_4858</link>
			<pubDate>Mon, 14 Jun 2010 15:46:01 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_4858</guid>
			<author><![CDATA[comments@tidbits.com (Rick Barry)]]></author>
			<description><![CDATA[• Make an archive from iCal.<br>• Reset the MobileMe sync history. Hold down the Option key, click the MobileMe sync circle in the menu bar and choose the Reset Sync Services option from the drop down menu.<br>• Open the MobileMe System Preferences and in the Account tab, click the Sign Out... button and enter random letters and numbers in the member name and password fields. You should receive an invalid member name or password error message. Do this 3 times. <br>• Now log back in with your correct member name and password.<br>• Next, click the Sync tab and click Synchronize with MobileMe, set it to manually, check only calendars at this time, then click the Advanced button in the Syc tab. If you get a message that states another computer with the same name is already registered, click Use Same name.<br>• In the Advanced/Sync window, select the registered computers.<br>• You should then be prompted to remove the unused sync data, which you want to do. <br>(You will resync the data from your computer with the updated information so no data will be lost. This option will help to prevent the duplicated calendars from returning).<br>• Select only the check box for Calendars. <br>• Now you need to reregister this computer if it does not register automatically. Click the Sync tab, and click Synchronize with MobileMe, this should register the computer. <br>• The next message should say On MobileMe with sync data from this computer and the arrow should point to MobileMe, Computer --&gt; MobileMe, and the text above the icons says "On MobileMe with sync info from this computer. If it does not say that you need to change the arrows so that it does.<br>• After you have done this and made sure the arrow points to MobileMe, Computer --&gt; MobileMe, and the text above the icons says "On MobileMe with sync info from this computer, then click the Replace button.<br>• Now log in to your account online and see if the calendars match your computer: http://www.me.com/calendar<br>• If you're subscribed to any Calendars, these won't appear in MobileMe, but they should appear in your synced devices. <br>• You can now recheck the sync options in the MobileMe System Preferences that were checked earlier and sync as you were normally. <br><br><br>]]></description>
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			<title><![CDATA[Comment from Sam]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1630</link>
			<pubDate>Wed, 14 Oct 2009 21:00:38 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1630</guid>
			<author><![CDATA[comments@tidbits.com (Sam)]]></author>
			<description><![CDATA[Thanks so much for this tip. It worked for me with my iphone 3gs.]]></description>
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			<title><![CDATA[Comment from callmetim]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1549</link>
			<pubDate>Thu, 08 Oct 2009 14:15:30 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1549</guid>
			<author><![CDATA[comments@tidbits.com (callmetim)]]></author>
			<description><![CDATA[I have a similar problem. After upgrading to 3.1 (among a host of other problems) I now have 10 (yes 10) duplicate MobileMe groups of calendars. I have deleted my MobileMe account completely from the phone, and re-added it. Same issue. Not sure what the deal is, here...]]></description>
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			<title><![CDATA[Comment from chunson]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1537</link>
			<pubDate>Wed, 07 Oct 2009 22:23:28 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1537</guid>
			<author><![CDATA[comments@tidbits.com (chunson)]]></author>
			<description><![CDATA[this guy had the most convenient solution. :D<br><br>About duplicate contacts and calendars on iPhone 3.0<br>By: grapegraphics on Thu, Jun 18 2009 at 1:57PM PDT<br>iPhone settings (Settings/Mail, Contacts, Calendars/MobileMe)<br><br>- turn OFF "Contacts," wait and then select DELETE from my iPhone. <br>- Turn ON "Contacts," wait and then select MERGE<br><br>- turn OFF "Calendars," wait and then select DELETE from my iPhone. <br>- Turn ON "Calendars," wait and then select MERGE<br><br>Seemed to work for me<br><br>Jb]]></description>
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			<title><![CDATA[Comment from Tom Carrolan]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1270</link>
			<pubDate>Thu, 24 Sep 2009 15:42:35 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1270</guid>
			<author><![CDATA[comments@tidbits.com (Tom Carrolan)]]></author>
			<description><![CDATA[Adam:<br>Opposite problem. I get duplicate events but they appear in iCal, not on the iPhone. Started w/3.1. I do not use MobileMe [but it tries to rear its ugly head thru Sync and Conflict Resolver].<br>So: a brand new recurring event, in a brand new calendar, when changed on the iPhone is treated as a new and therefore dup event in iCal. Say, 3 changes on the iPhone... I now have that many events in iCal, plus the original of course.<br>On the iPhone... all is well. I have been pounding on this problem for a couple of weeks now. Any thoughts from those with similar issue?]]></description>
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			<title><![CDATA[Comment from Derek Meakin]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1243</link>
			<pubDate>Wed, 23 Sep 2009 06:46:15 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1243</guid>
			<author><![CDATA[comments@tidbits.com (Derek Meakin)]]></author>
			<description><![CDATA[Glory be! All my iPhone duplicate contacts have now disappeared. Many, many thanks.]]></description>
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			<title><![CDATA[Comment from Derek Meakin]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1242</link>
			<pubDate>Wed, 23 Sep 2009 06:38:14 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1242</guid>
			<author><![CDATA[comments@tidbits.com (Derek Meakin)]]></author>
			<description><![CDATA[You're quite right, Adam. But I don't have any problems with my Address Book. Where all the duplicates are springing up is in my iPhone, and it's getting worse.]]></description>
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			<title><![CDATA[Comment from endoftheQueue]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1231</link>
			<pubDate>Tue, 22 Sep 2009 11:05:40 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1231</guid>
			<author><![CDATA[comments@tidbits.com (endoftheQueue)]]></author>
			<description><![CDATA[I had endless problems with 3.1 and duplicate entries especially as some Apps such as Omnifocus create their own subscription calendars. The only solution that worked was to go into settings on the iPhone and delete the ME mail account. This then erases everything associated with ical contacts mail etc. Adding the ME account back in restored everything to normal, removing dupes from ical and contacts. WARNING. You must be sure that all your ical contacts email etc. are up-to-date on your ME account - anything that has been added on your iPhone that is not in sync will be lost.]]></description>
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			<title><![CDATA[Comment from Adam Engst]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1227</link>
			<pubDate>Tue, 22 Sep 2009 09:40:32 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1227</guid>
			<author><![CDATA[comments@tidbits.com (Adam Engst)]]></author>
			<description><![CDATA[What if you choose Card &gt; Look for Duplicates in Address Book? That usually does a pretty good job of merging duplicates.]]></description>
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			<title><![CDATA[Comment from Derek Meakin]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1225</link>
			<pubDate>Tue, 22 Sep 2009 08:44:03 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1225</guid>
			<author><![CDATA[comments@tidbits.com (Derek Meakin)]]></author>
			<description><![CDATA[What a splendid tip. I  followed the Empty Calendar route and now all my duplicates have disappeared. Great!<br>Now can you do the same thing for Contacts? My list is not only littered with duplicates but also triplicates and in some cases the same contact appears four or five times. I tried a reset but that did more harm than good. The duplicates, etc, are still there, and I have lost a lot of data from other parts of the iPhone. Life can never be simple, can it?]]></description>
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			<title><![CDATA[Comment from Kevin Davidson]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1214</link>
			<pubDate>Tue, 22 Sep 2009 00:30:33 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1214</guid>
			<author><![CDATA[comments@tidbits.com (Kevin Davidson)]]></author>
			<description><![CDATA[Everyone seems to have missed the fact that 3.0 added subscribing to calendars directly on the iPhone. I was using this to keep my personal calendars and subscribed calendars up to date even if iCal has not run for a long time. Now my iPhone calendars are a mess. I've had to disable calendar subscriptions on my iPhone to avoid duplicate or zombie entries and subscribed calendars are only as up to date as the last time iCal ran on a Mac. Apple - this is broken. <br>Even worse upgrading from 3.0 to 3.1 left me with two "MobileMe" groups of calendars. Only the new group, including subscribed calendars, would be deleted when turning MobileMe syncing off and on again. Only syncing with a second MobileMe account removed the older entries.]]></description>
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			<title><![CDATA[Comment from PeterP]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1202</link>
			<pubDate>Mon, 21 Sep 2009 17:21:33 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1202</guid>
			<author><![CDATA[comments@tidbits.com (PeterP)]]></author>
			<description><![CDATA[WARNING to the above. You better make sure your MobileMe data is clean and complete before trying the above.]]></description>
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			<title><![CDATA[Comment from PeterP]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1201</link>
			<pubDate>Mon, 21 Sep 2009 17:18:35 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1201</guid>
			<author><![CDATA[comments@tidbits.com (PeterP)]]></author>
			<description><![CDATA[Having synced via MobileMe for a few weeks, made the mistake of doing a USB Sync with iTunes and ended up with duplicate Calendars AND duplicate Contacts in Address Book on the iPhone AND on the Mac, but fortunately, not on the MobileMe account, which only knew about its own data, and not the iTunes data.<br>Finally found the elegant way to eliminate the iTunes duplicates by:<br>On iPhone Settings &gt; Mail,Contacts,Calendars &gt; Accounts (MyMobileMeAccount) &gt; Turn OFF the Calendar switch.<br>Then turn it back on. iPhone warns you you have calendars on your iPhone and asks if you wish to Merge or Delete. Just select Delete. This wipes all calendar info from the iPhone. Next sync update from Mobile Me will download a single set of calendars held at MobileMe. Next sync with the Mac will eliminate the duplicate calendars on the Mac.<br>Same process works with Address Book.<br>Problem fixed (after loosing half my hair)<br><br>You can view single calendars on iPhone, to eliminate clutter; only other choice is ALL.]]></description>
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			<title><![CDATA[Comment from spielbrot]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1137</link>
			<pubDate>Fri, 18 Sep 2009 05:23:06 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1137</guid>
			<author><![CDATA[comments@tidbits.com (spielbrot)]]></author>
			<description><![CDATA[This is not the worst problem with 3.1 synking, since you can dix it with a work around. The worst problem is that you no longer can choose which calendars you want to view in iPhone. Mine is cluttred. See this link<br><br>http://whistlewater.wordpress.com/2009/09/14/this-is-how-apple-ical-sync-should-work/]]></description>
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			<title><![CDATA[Comment from Dick]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1136</link>
			<pubDate>Fri, 18 Sep 2009 04:00:08 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1136</guid>
			<author><![CDATA[comments@tidbits.com (Dick)]]></author>
			<description><![CDATA[I think I've figured out how to get rid of the annoying 'On my iPhone' sections in Contacts and Calendars in OS3.1.<br>The important thing is that the Contact and Calendar lists on the phone must be empty when you turn on MobileMe.  The way I did it was to create a group called empty in iCal and Address Book, then configure iTunes to sync only that group for each.  Sync that.<br>Now turn off MobileMe sync for Contacts and Calendars, select 'Delete from My iPhone', and turn it back on.  It didn't offer to merge the data for me, it just did it.  I now have Contacts and Calendar groups in a single list, not split into Mac/iPhone and MobileMe.<br>You can now go back and delete the Empty groups in iCal and Address Book, and set iTunes to not sync Contacts or Calendars.<br>Worked for me :)]]></description>
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			<title><![CDATA[Comment from emaven]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1135</link>
			<pubDate>Fri, 18 Sep 2009 02:48:11 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1135</guid>
			<author><![CDATA[comments@tidbits.com (emaven)]]></author>
			<description><![CDATA[I had this problem too. I believe I solved it by turning off the syncing from the prefs on the iPhone and then turning them back on. I do not have any empty calendars on my iPhone.]]></description>
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			<title><![CDATA[Comment from Michael Cohen]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1134</link>
			<pubDate>Thu, 17 Sep 2009 18:57:41 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1134</guid>
			<author><![CDATA[comments@tidbits.com (Michael Cohen)]]></author>
			<description><![CDATA[ChrisW: <br><br>I agree with your wish list.<br><br>Did you send it to Apple? If you haven't you should, since Apple is more likely to change the way the iPhone software behaves if it actually gets direct user feedback about the problem.<br><br>Use this address:<br>http://www.apple.com/feedback/iphone.html]]></description>
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			<title><![CDATA[Comment from ChrisW]]></title>
			<link>http://db.tidbits.com/article/10572?rss#comments_1130</link>
			<pubDate>Thu, 17 Sep 2009 12:15:30 PDT</pubDate>
			<guid>http://db.tidbits.com/article/10572#comments_1130</guid>
			<author><![CDATA[comments@tidbits.com (ChrisW)]]></author>
			<description><![CDATA[3.1 is much worse than 3.0 when it comes to MobileMe calendar syncing. My calendar now has 1000 events from iCal subscription calendars that I usually leave hidden in iCal. The problem? No way to hide them on the phone!<br><br>So there's no way to view my important 3 calendars at the same time without thousands of extraneous events. It was actually better before 3.1 when my subscribed calendars weren't sync'd at all. <br><br>I would like to see:<br>1. Ability to choose which calendars sync via MobileMe<br>2. A way to turn on/off each calendar on the phone, just like in iCal]]></description>
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