Join Date: Nov 2018
Location: Istanbul, Turkey
Programs: TK Elite Plus,BAEC GGL,ITA Executive, AFKL Gold,QR Gold,HH Diamond,Bonvoy Gold,ALL Gold
Posts: 14,186
This is correct.
If you upgrade a leg either via miles, an upgrade voucher or via cash with one of the discounted upgrade offers; you would receive miles according to your original booking class.