Sup Tman. Idk if this info will be helpful for you but ive tried i think most of the variations possible for the end of that mission. One time i let the hawkings die, and saved the planc (however somehow the grand disabled the kalmat and never killed it, idk if that changes things). At the end of the mission after the planc jumped it told me that 1/1 secondary objectives completed, but nothing bout primaries. Still told me i failed at debriefing (only after i clicked accept, the actual debriefing told me i succeeded). Then i kept both the hawking and the planc alive, and waited for both to jump, and it actually told me that 2/2 primary objectives had been completed, and the kalmat was destroyed, and i let the grand complete its waypoints, but it still didn't let me accept after debriefing. Then i also did, save the hawkings, kill the kalmat, and let the planc die, but then it just says 1/1 secondary objective completed, and doesn't let me pass. yeah, hope that helps you narrow down the problem.