grabCAD not reporting correct printer

i have a Stratasys J850.
it is sandboxed and directly connected to a machine that is running grabCAD Print.
worked fine.

today i updated the PolyJetJobManager on the embedded PC
to version 31.65.41.23534 from a 27April2022 download.
i did an uninstall of the JobManager and rebooted the PC and installed
the above version. told it i was a J850 @ 127.0.0.1

i then uninstalled the old version of GradCAD on the workstation, rebooted and
installed version 1.65.13... of GrabCAD.

when i fire up grabCAD now it says that i am attached to a J835 and not a J850.
these machines have different print volumes i think.

grabCAD Print will not let me delete a printer to do a "search for printer at 10.0.0.1"
if i do that it still says it's a J835.

i've re-did this a couple of times, uninstall and install but to no avail.

anyone know how i can get grabCAD to know what printer is really there?

-m