How to change User ID?

[Mellymonster]

Ok I have a member who made a new account, the reason behind it is her old account wasn't taking to a few things, but the new account does, I would like to give her, her User Id back, how can I do this? Is it possible?

[Marco van Herwaarden]

You could merge the 2 accounts, but you should not try to change id's.