.miz mission file can no longer be opened

[onlinetk]

I saved a .miz file with a mission, the editor is permanently frozen (it's on the notebook), well restarted the notebook and DCS and continued, it's been like this for weeks. Now all of a sudden the file is no longer displayed in the Open window of the Mission Editor, despite the folder content. Likewise, if I move the file to a different path, it is no longer displayed. However, when I create a new mission and click save as, the missing file is displayed so that I can overwrite it.

Does anyone have a solution?

I've already tried to open the file with 7zip, but then I get the message "cannot open as archive". A newly created file works.

DCS OpenBeta, latest version

[Flappie]

If you cannot open it with 7zip, it means it is corrupted.

[onlinetk]

I think too, was hoping there is another solution that I don't know. I'll have to put up with it and start over. now I have learned from it and make several saves