SQL Membership

I have inherited a asp.net 2.0 app that I have upgraded to 3.5.  One of the odd things with this is is in the membership service it was set to use AspNetSqlMembershipProvider and it has an application name with users and the membership table relates to, but the role manager seems to use the "/" name.  So in the users table the user is listed twice, once with the application guid for the membership table and once with the guid for the roles.  I was trying to get this setup to migrate to the new Identity 2.0 and was trying to set it up so the user exists only once with one of the application guids being able to be removed.  Ideally I would keep the Membership user since there are records associated with the id. I have been able o change the application name for the AspNetSqlMembershipProvider to"/" and then copy over the information in the membership table to the role guid and everything works, but when I try to change the Role ...