I have music maker v. 24.1.4.68 running on a brand new HP Omen with Windows 10.

I suddenly lost all tracknames I wrote in the left column, but worst of all I noticed that nearly half of all my tracks in this project have dissappeared. Can not find any back up copy. Now I'm worried, if shall bother record the tracks again, if I'm gonna lose them again. I've had problems with movie maker crashing and losing bits and pieces for several months now, and the support desk has not been answering any of my problems. Anyone got a solution? Or have similar experiences? Most important will be to get hold of the lost tracks. I appreciate anything that will bring me one step closer to a solution.