"The managed speed/Mach target may be set below maneuvering speed but as long as the speed target is managed, the FMGS limits teh aircraft to the maneuvering speed of the current slats/flaps configuration ( VAPP, F, S, Green dot)"
This is it, and EXPEDITE is included in this description according to the page 10, ENGAGEMENT CONDITIONS:
-EXPEDITE MODE IS ENGAGED.