So I'm in a bit of a pickle. In order to get OWA to work on our external, customer site we enabled forms and windows authentication on our internal site and added a custom login so users were prompted for their AD credentials. That is working fine now with FBA users able to view and edit office documents just fine.
The problem is now in Project Web App. All user accounts changed from a Logon Account like i:0#.w|domain\username to i:0.w|fbamembershipprovider\username and when a user logs in (I'm assuming) another entry with the original Logon Account name is created in the table.
The problem with this is that all the tasks assigned to users are now gone. What did we do wrong? How do I revert all those users with the new fbamembershipprovider account names to the old user logon account names?