Definitely make copies of your project files before doing anything.If you use the “Save Project” function, you should have a restore point that you can go back to using “Reload Project” , assuming the CF media isn’t faulty.
If you do not use the “Save Project” function you will only have the autosaved version of the project. If that has gone corrupt as fault of a bug in the OT, then your only chance may be Elektron support. Also keep in mind that your CF media may be at fault and should probably be tested for errors.