I want to upgrade my User Application, which requires migrating the UAD
in Designer. In order to install the base UserApp package, I have to
remove the existing (3.61) server from the driver set, since otherwise
the "Packages" option doesn't appear in the driver's properties.

Am I supposed to export the driver to Designer, remove the 3.61 server
from its server list, install the base package, then re-add the 3.61
server so I can deploy the UAD? Won't I use server-specific settings by
doing this?