Is it possible to have one printer serving two systems?

When moving from Queue based to ndps there were a nice feature to direct the
old queues to the new printer agents.

I'd like to do the reverse when upgrading from ndps to iprint, is there a
way to have our old clients continue using the old ndps server (NW 5.1.6)
and our new clients use the new iprint server (6.5.2) with the same
printers attached, simultaneously?