2 Farms, one with TProfiles, one with UPD

So, we have an old WTS environment for which the users have tprofile path set in their AD Accounts.

Now for a new WTS i want to use UPD.

What is the recommened way to tell this new WTS to ignore the path under TPRofile Path in the AD Account?

How do I do this the best way?

Old WTS is win 2003, new is 2012 r2

Or does the 2012 collection automatically ignore tprofile if set to use UPD?