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Macintosh iCal data loss between MobileMe and iCloud

I have an older mac (2007).  When the note came from Apple to move to iCloud, my wife clicked on yes and then we discovered I needed to upgrade from Leopard to Lion which included a memory upgrade.  That took about two months or so to work through my system, but a few days ago I did the upgrade and all is fine.

Until I open iCal.  I have lost a load of entries from the iCal I was using before the move.  My personal theory is that I was not able to sync the iCal on the mac with the iCloud version after the button was clicked to accept the move to iCloud, so during that period, iCal was just working locally.  When I completed the upgrade, iCal synced to the version of the calendar that had moved from MobileMe to iCloud.  

Have I lost the changes?  is there any way I can get it back?
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8/22/2022 - Mon

first thing to check whether you changes are on icloud. if not then i would say they should still be on local computer if not then they are gone.  Do you backup your computer regularly ?

No, the iCloud version has none of the entries made in May and June.  Alas, my backups failed at the beginning of the year, when my Time Machine disk had a hardware fault.  I sync to iDisk through iCloud, but I am not sure if the calendar is included in that - it appears not to be.

Oh, and iDisk is gone now, isn't it?
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William Peck

Yes, iDisk should be gone. You should have been warned multiple times in the last few weeks alone, but it is likely that you were not checking the email where the warnings were sent. You MAY have a dmg (disk image) file of the iDisk as a backup on your local drive. I have one, and I don't remember making it.

As for calendar, I would hope you old local calendars are still on your computer somewhere, but with iCloud, you are meant to just use the iCloud calendar so that everything syncs automagically.

Came across this...

This is a good question, I will come back to this...

to clarify, iCal still lets you have a local calendar.

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No one seems to know where the iCal data is stored. I have given up - my data is lost.  As Steve Jobs said about MobileMe and iCloud 'that was not our finest moment...'
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