Oh the topic name changed from autosave ,to “not saving aynthing”?
Especially for longer trips saves that are not reliable are no fun. I’ve had issues with it too before & have reported on it Sim Update V (1.18.13.0) Bug Megathread - #563 by TripsyTipsy
The bug is not update specific though,before update V ,saves were still somewhat reliable.At least they saved progress ,not the state of flight,but progress at least.In update V unfortunately it no longer seems to save anything indeed