Currently Being ModeratedJul 31, 2012 3:24 PM (in response to Mark Allison)
I have the same issue however none of my preference changes stick. Anytime i close and open Mail all of my changes are gone. I'm curious are you using SpamSieve for spam filtering? I suspect it has something to do with the iCloud syncing however I am using SpamSieve which could also be interfereing.
Currently Being ModeratedJul 31, 2012 6:55 PM (in response to digitalme!)
Not sure the answer to your problem, but I can say I have SpamSieve. No issues with my rule being imported from Lion and all rules continue to work correctly.MacBook Pro, OS X Mountain Lion, 2.4GHz IntelCorei5 320GB HD 8GB RAM
Currently Being ModeratedAug 7, 2012 6:55 PM (in response to Mark Allison)
A week after upgrading, all of my rules (and I had many) disappeared this afternoon. In their place was the deafult "News from Apple" rule. Argh! The rules seem to still be in the MessageRules.plist file, but they do not load.
Currently Being ModeratedNov 17, 2012 9:40 AM (in response to Mark Allison)
Hi Mark and others,
I may have a solution to your problem as the following fix worked for me.
Go to… System Preferences > iCloud…
Uncheck "Documents & Data".
Open Mail and create a new rule. Quit Mail and re-open to confirm you new rule is still there.
You can then turn "Documents & Data" back on.
Everything seems to be working for me correctly since I did this.
Hope this helps,
Currently Being ModeratedFeb 20, 2014 3:09 AM (in response to mattlurkentvrdik)
Hello all of you, and especially to those who found this old thread through a search, like I did.
I could finally get rid of the problem by deleting everything in "~/Library/Mobile Documents/com~apple~mail/Data/MailData/". From what I see this should be done while "Documents & Data" is turrned ON, because otherwise your changes will be overwritten when you turn it on again. When deleting the Files in Finder I received a warning that they would be removed from all other iCloud clients as well.
Siedenote: I had no rules, signatures or smart mailboxes to lose in this case, but if you do, I suggest saving those files somewhere so you might be able to avoid having to set them up again.