Migration log error: !Error: Save Changes -- MAPI_E_CLL_FAILED 80004005
This error is caused by corruption in one or more of the source documents.
Search the migration log file for this error. The log entry will include the NoteID and subject of the corrupt documents.
If this is a repeating task or calendar item, it's possible it is missing the parent entry or the date/time info is corrupt, and needs to be repaired or deleted.
This must be performed before the migration will complete successfully for these corrupt items.