See previous Answer https://www.mathworks.com/matlabcentral/answers/103130-does-the-matlab-editor-debugger-automatically-save-open-files#answer_112475
NB: There's a checkbox in preferences for automagically deleting the backup files when the editor closes that is "ON" by default I believe. But, if the editor is still open when the crash occurs, then the .asv files should still be there and current as of the time since the last scheduled save interval. Any changes between that time and the crash will be lost, but you'll at least have a starting point of the last session.
