The Digital File pro Upload code does not have any ties to the database.
That is in the Insert, Update and Delete record server behaviors.
The database used by these server behaviors is determined by the connection file selected.
On the Admin pages, double click the Insert, Update and Delete record server behaviors and change the connection that is used. Double check that changing the connection does not remove any of the bindings, if it does, you will need to add the bindings back.