The post from Plusgrade at the beginning of this thread said miles of the original ticket. However, the information on tap.com indicates to the contrary:
2. If the bid submitted by the passenger is approved by TAP:
a. The passenger will receive two electronic messages: one to inform that the bid for the route (flight leg) in question has been accepted and the corresponding
upgrade has been awarded and the second message to send the new e-ticket.
b. After approval, TAP Portugal shall charge the amount corresponding to the accepted bid to the credit card used by the passenger.
c. The total amount charged will include the amount of the bid placed by the passenger and all applicable fares and fees.
d. The fare conditions for the original ticket purchased by passengers shall remain in force and shall apply even if the bid has been approved and the upgrade made,
which includes, for example, cancellation policies and fees for ticket changes.
e. The debit note on the credit card can be issued in the name of TAP Portugal, Plusgrade or any other name that may be previously informed by TAP.
f. If the passenger is a Victoria client, the award of miles will be made depending on the class in which the passenger was placed following the bid, the
route (flight leg) concerned and on which the passenger actually travelled.
Full link
here
Now, if that only applies to Victoria or other *A programs remains to be seen.