Converting from FBA to Windows Authentication

I have a client that is currently using FBS with the FB pack and they need to switch to Windows Authentication. I have found a post that talks about the process of making the switch and it looks pretty straight forward (( ).

My question is whether or not the FBA pack changes how users are stored over how plain FBA. If not, then simply removing the FBA pack solution, reconfiguring SharePoint to use Windows Authentication and the converting the identities of all the users to use their AD account names should be all that we need to do. *touch wood*

Does anyone have experience with this? Any pitfalls or challenges? Any feedback would be greatly appreciated.