When logging on to LFS you have to choose a character with different characters having different liveries names and progress in training (for example I have a character named Tc19 and Tc19_). However every now and then you can access a character as the game cant load the file and your forced to restart your character resetting all of your progress.

I have tried making copies of the file and replacing the original but there is no fix that I can find and from my research there seems to be no fix with the bug not even being noted on any forum pages.