Merge tool for 'imported_<user>" to "user"

[Floris]

Hi there,

vB has the functionality to merge imported_user with user.
But since I recently obtained about 5 .sql dumps from various sites I acquired I have about 10K+ imported_ users that didn't merge properly because of mismatching emails. However, a lot of them are actually that user and we wish to have some sort of mass merge tool.

Would it be possible for someone to be so kind to write some sort of script that I could run on the database that searches for certain conditions? Such as if the password hash is the same and username is spelled the same (minus the imported_ part; including capitalization) then assume the account is from the same user and merge it.

Things like that..