In #40, Lockheed is in surgery from an injury. Kitty's all stressed out. Then at the end, the X-Men and Jean show up.
But... it's revealed in #41 that they are really Warwolves dressed as X-Men and Jean. After the fight, Excalibur investigates, w/ WHO help, seeing footage from Genosha, which shows the X-Men. They call the X-Mansion hoping to talk to them, but Cable answers (since it was X-Force HQ at the time).
This issue also reveals that Rachel knew that the X-Men faked their deaths the whole time, but she kept the secret because she really didn't want to face Logan after he gutted her.
Thanks . I know Rachel knew because she was with the X-men and X-Factor in Days of Future Present crossover in the Annuals.