Event duplication in iCloud accounts

I have had a couple of emails in the last few days in relation to Apple's iCloud and duplicates in iCal. Having used iCal Dupe Deleter the duplicates for some users are re-appearing in iCal after a short while. The addition of the duplicated events is due to iCloud re-introducing the duplicated events back into the calendars from the server.

Apple have created a knowledge base article (TS4038) that outlines how they suggest users to remove duplicates in MobileMe. This method is identical to that for iCloud calendars and (although it seems long winded) I suggest you follow these instructions when de-duping events from iCloud calendars.

Submitted by John M on 18 October, 2011 - 23:41
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Comments

Submitted by Visitor (not verified) on 24 October, 2011 - 21:55.

Can I just say, thank you SO much! I spent over an hour trying to find a solution to having 5 of every event. Four minutes after finding your site, everything is perfect. Thanks for putting this together, it worked like a charm.

Submitted by John M on 25 October, 2011 - 15:06.

I'm glad it helped you.

Submitted by Visitor (not verified) on 28 October, 2011 - 04:15.

I have just installed iCloud and my address book has been duplicated.

Do you have any recommendations?

Regards,

Submitted by Visitor (not verified) on 29 October, 2011 - 10:21.

Check to see if you have both your local and iCloud address books selected for display.

Submitted by Visitor (not verified) on 12 November, 2011 - 04:16.

For duplicate contacts; open Contacts.
Look under "CARD" choose "LOOK FOR DUPLICATES" this worked instantly. now only if this worked in ICAL

Submitted by Visitor (not verified) on 29 October, 2011 - 11:55.

Thanks John. I got rid of tons of duplicates in all the calendars following the procedures you posted here (yay) except the situation that brought me here in the first place: the calendar I created to receive dates from Dates to iCal has duplicates I cannot get rid of.

I removed that calendar both in OnMyMac and in iCloud and created a new calendar in iCloud to receive dates directly from Dates to iCal. Two copies of each event appear in that new calendar too, so obviously they are populating from Address Book via Dates to iCal. In Address Book preferences I see three accounts: one iCloud account for my AppleID (enabled), another iCloud account for my .me email address (not enabled) and one for On My Mac which on give options for syncing to Yahoo and Google (both not selected). Since I get 1 duplicate of dates from Dates to iCal, I conclude that Dates to iCal is sending both copies to the iCloud calendar. Thanks.

Submitted by John M on 31 October, 2011 - 16:28.

Hi,
Your situation is not entirely clear to me. It sounds like you have two duplicate copies of your Address Book - this is why you would get two dates for each contact. If this is not what you mean then contact me using the link above.
Thanks
John

Submitted by Visitor (not verified) on 12 November, 2011 - 04:21.

I went to the Apple Link, on how to delete these duplicates. Am I understanding it right that I still have to put the "period" in the search and go through each duplicate one by one and delete??? Ical dupe is so much faster, but if they would not reappear. I am hoping that I am just misunderstanding the directions..

Submitted by Visitor (not verified) on 28 November, 2011 - 05:44.

You're a talented programmer. Kudos to you John.
Pasadena, CA.