I was in the middle of a two hour long rescue mission, I had just moved the rescue-y to the rescuer's ship. I was in the middle of a turn when I accidentally pressed Tab, switching my view to Kerbin. I switched to the rescue-y's ship and then switch back to mine to bring back the focus, but when I switched back, both of the kerbals were deleted and I had no control over the ship, and my 2 hour long project burned up in the atmosphere?
What happened? Did I do something wrong?
Thanks have a good one, ladies and gents