Seam to remember that the unit gave a click as updates were being accepted?You will only be able to change a limited amount of options on this. - But I guess you know that??
You should be able to read CV's on your programming track, you may able to right CV's, but get an error on the Navigator, as there will be no motor to give a 'kick' of feedback to tell the CS it has done it.
If there is an onboard motor decoder, or a power buffer, then these will both confuse the issue.