Initial fix in: changeset:   6431:ada1edcc9132

Export is sorted to prevent the issue.

Import uses method #2 with value -1 to fixup/move aside the active
record. The -1 fixup is reset after the fixup succeeds or fails rather 
than batch fixup at the end. I think the code is more readable this way.

Also the fixup is logged at info level when it runs and when it 
succeeds.
If it fails an exception is propagated.