Hi guys, heres an interesting problem Ive encountered in DNN 4.5.3.

We are currently creating a module that will transfer users from an existing database and create them as local users on a DNN instalation. Since we have to move over 20k users, we created a "cleanup" button that would delete the users and allow us to create those users again (in order to address performance issues).

Apparently, once users are deleted, it is impossible to create them again using the UserContoller.CreateUser() method (keeps sending back a CreateStatus of  "Duplicate Username", despite the fact that it has been removed from the Users tables, as well as its references in the asp Membership tables! We have gone as far as assigning a different UserInfo.Membership.Username value and the CreateStatus object returns "unknown error".

My question is this: Is this a limitation? can specific users be deleted and created again?  Do I have any options left besides re-creating the database and reconstructing all modules/content?  (yes, I have already executed the cleanup scripts for all aspnet_x  related to the aspnet membership provider.)

thanks in advance for any pointers/information.

-ed