This may be one of those inconsistent policies that has been changed over the years. From the 3/95 POS:
"Transferred Home Resort Vacation Points may not be banked, borrowed, or returned to the Transferring Club Member." Based on that policy I would agree that Holding Account and Reservation Points could be transferred, since they cannot be banked and will expire at the end of the Use Year.
If transferred points can now be banked, it would now seem foolish to allow the transfer of points that would otherwise expire at the end of the Use Year. However, I can't find any specific exclusion regarding the transfer of these points. Perhaps someone with a recent POS can research the present written policy- even though MS may have already "modified" the intent with a variant anyway.
Again, with the inadequacies of the present ability to track resort and/or Use Year it would seem to be another instance of another gaping hole in the policies designed to keep system points in balance. Apparently,
DVC doesn't recognize these issues as a problem or they would have devoted more energy to tracking the origin of all transferred points - even manually. To the contrary, DVC has chosen to actually worsen the issues by allowing multiple transfers (albeit still in one direction) instead of the original limit of one transfer per year.