I confirmed a second time with another CM at
DVC - it is treated as two transactions.
Here is what happened Owner X transferred 50 Apr11 points to Owner Y, who has a use year of Dec and is looking to make reservations in April 2012.
Owner Y accepts the transfer, immediately banks the 50 points into the 2012 UY and then uses the banked points for an April 2012 ressie.
Two CMs at DVC have told me that the transfer counts as one transaction in the current UY, and the banking counts and a transaction next UY, therefore owner Y cannot do another transfer next UY.
I know this sounds off, but I just confirmed this.