Mh.. there is a debriefing stage for this mission.
But i have to admit, that i did not check that out. Because i was convinced that this would work
The debriefing event for this stage looks also very unusual in comparsion of much other missions i saw, but actually it should work, because all the needed conditions are met during the mission.
Because the conditions for this stage to appear are:
NTT Beauregard needs to be have a Friendly IFF (is met with the docking of the Lancer transports)
NTT Beauregards have to depart the mission (is met with the jump out)
The SOCv Escher is not destroyed (should also be true if the ship was not destroyed before your jump out and should also be still true when this ship has departed(?))
Actually i do not have a clue why this is not working in the first place. Every condition is met.
Were you able to finish the mission to continue with the campaign?
Otherwise i could change the conditions easily to ensure, that they are met.
But nonetheless, seems, that at least this mission needs a lot of upgrading in the future. Maybe the FSCRP put LM again on the list
Or there are some errors in the behaviour of events in the game, like the "engine" vs "<all engines>" problem, where the first one does not work to reactivate a ship.