From: Chicago, Illinois
RE: Those two mountain divisions, and Morale/Experience in general....
Morale doesn't drop as you take replacements; experience does. Regardless of REFIT or whatnot, elements will gain experience up to the morale of the unit, but no further. Thus, while those Mountain Divisions will likely NOT gain morale at this time parked in the rear, they might gain CV because all the elements will slowly train up until Experience = Morale. They only gain a point a week, so depending on where they are it could take a while.
I have observed that units will gain morale, very slowly, ABOVE the NM into the Mid-50s or so. If you park any of the Romanian or Italian units in the rear long enough, they will have morale and experience around 53-55 or so. That seems to be about the limit. Maybe high-50s, but it can take quite awhile.