If it helps.....on the 757/767.......if you have the MCP alt set at a level below your present alt and then hit TOGA you will get a pitch-up to a GA with a 2000fpm climb (or full, which ever is less) until it hits the target alt [ which it will never manage to do in this case]
Think about Palma for runway 06L where the GA alt is 2000 but the approach round the corner is going to be in the region of 2500. If you GA early it will pitch up as the first part of the GA and then climb to FL400-ish unless you stop it.