A chat rep. just told me account move is gone for good "for security reasons".
Time to move away the last domains I have with domain.com, dotster and netfirms or to sell them.
Unfortunately, when selling, the buyer will have to be involved when the "manual" move is performed.
The procedure is like this:
1.Start chat.
2. (optional) mention to domain.com/dotster/netfirms that they're idiots
3. tell them the domain you want to move and the account you want to move it to
4. Authenticate yourself (security question)
5. They will ask you to authenticate for the other account as well
(optional) a good time to remind them that they're idiots
6. Tell them the other account is an account for another person (your customer) and you can't possibly know the answer to their security question... not to mention it would be unprofessional to ask them
7. The domain will be moved out of your account (don't know where it goes -> probably to holding)
8. Tell your customer to add the domain to their account using
a. Control Panel -> "Add existing"
b. Contact support if that doesn't work
9. (optiona) Don't forget to leave a really bad feedback when you exit the chat and remind them once again in the comments that they're the absolute worst registrar
...and of course ... IDIOTS
Good luck!