We are migrating to a net new Unit 7.x from a 4.x server. We did not do a "all in one upgrade ( install 4.x, DIRT restore, inplace upgrade to 7,x). Instead we chose to leave 4.x up and running and gradually move to 7.x by using the "move subscriber feature in GSM. I have setup digital networking on both ends and I am able to see the "move subscriber" option. However when running the wizard on a 4.x user the Unity 7.X server does not show in the "Select Destination" dialog box. I am able to move a 7.x subscriber to 4.x though.
Any ideas what I missed?