Q: Keychain Corrupts Items on Copy
I've just purchased a new iMac 17,1 and updated to OSX 10.10.4, El Capitan
I was manually migrating my stuff over fram a much older iMac when I ran into this problem, struggled with it for a few hours with the help of a Apple rep and got nowhere, but I think I finally have it nailed down and identified.
Create two fresh keychains, test1 and test2.
In keychain test1, create a secure note, SN11, and a Password, PW11. Open each item and enter the keychain password to always allow access.
Now drag SC11 to keychain test2. In test2, there is now an application password titled <unknown>. SC11 has vanished from test1, of course. The content of the new password is <?xml version="1.0" encoding ="UTF-8"?> (your data has vanished)
Now drag PW11 to keychain test2. You get a message that the move is not possible because there is already an item with that name in test2.
Now delete both keychains, generate new ones and set up the experiment again.
Now drag PW11 to test 2. In test2 there is now an application password titled <unknown>. PW11 has vanished from test1, of course. The new <unknown> password has the same password as PW11, but the other info is spare electrons.
Now drag SC11 to keychain test2. You get a message that the move is not possible because there is already an item with that name in test2. Delete the <unknown> password, and you can now "move" SC11.
It works the same for a Copy/Paste procedure.
I just love testing Apple's beta SW in my spare time
iMac (Retina 5K, 27-inch, Late 2015), OS X El Capitan (10.11.4), 16GB, 1TB Fusion
Posted on May 10, 2016 5:57 PM