Having resale vs. direct points doesn't impact the ability to transfer the points, but it doesn't change the rules of use for the points.
If you have resale points that have restrictions on them in some way, they can still be transferred into a direct contract membership, but those points still carry the same restrictions.
For example, if you have points restricted from RIV and VDH, and transfer them to an account with points that are good there, the system won't let you use those points if you try to book. But, if you were booking something else, then the resale points will work just as they would in their own membership.