yast2 lpd printer drops model

On a couple of newish systems, a 10.2 and an 11.0, when we try using yast2 to set up a LPD printer everything goes OK until the configuration is saved. The model (OKI ML-320 Turbo) is selected ok during configuration, but doesn’t stick after Next (F10). The rest of the entry looks ok, ip, looks like:

none / lpticket
Shared ┴
Connected As lpd://192.168.0.13/lpticket

but note the ‘none’ where the model should be. Any help?