Thread:Project:Support desk/Should I use CentralAuth or shared tables?/reply (22)

If you are using a shared user table, you automatically rename an user with Renameuser in this database and in the wiki's revision et cetera tables. But the edits get not transferred on the other wikis. Therefore, the easiest way is using Renameuser on your main wiki and for the other wikis use ReassignEdits to transfer the user's edits on these wikis, too.