Is it possible to create a new user profile service application and use the exisitng the databases from a previous user profile service application? Both service applications are in the same farm.
I want to preserve profile and social data.
I have done this more then few times on my development machine (!)
You just delete old user profile service but without checking
Then you create new user profile service and for
I don't see any possible issues if you are doing this on same farm and with existing databases. But again, I have tested this only on my development environment!
Here is step-by-step guide on how to recreate User Profile service with PowerShell:
And here is solution to invalid Sync DB (MSDN forums):
So when creating 'new' User Profile Service you can simply create new Sync DB and everything will work as expected.