The already deleted tlk.wiktionary blocks the SUL process at least for User:Jon because wikt:tlh:User:Jon has still sysop rights: http://tools.wikimedia.de/~vvv/sulutil.php?user=Jon
Error message from Special:MergeAccount:
Login unification status
The migration system could not confirm that you are the owner of the home wiki account for your username.
Another wiki was determined as the home account for your username; follow the link below and log in there to finish your account migration.
The password and e-mail address set at this wiki will be used for your unified account. You will be able to change which is your home wiki later.
- tlh.wiktionary.org (home wiki)
I asked a steward to desysop wikt:tlh:User:Jon, but he was unable to do it: 'Database tlh.wiktionary does not exist or is not local.'