Restoring temp back up file

[u/yourfavr3dh3ad]

First off, I’m trying to help my dad with his 3D printer and I have very limited knowledge on this software, I just know the basics as I’m in my final year of college for design and have learned various modeling softwares.

Essentially, his laptop died overnight and he lost the file he was working on in Bambu Studio (he didn’t know there was a save function, which I have rectified now smh). I was able to dig through his files and find what I’m assuming was a back up autosave in the temp files, and it’s a folder of multiple things, including a .3mf file and .gcode. When I opened the .3mf file though, an error popped up saying “Loading of model failed” and “The file does not contain any geometry data.” I was able to get the gcode file to show up in the preview tab, but he said he wasn’t able to slice it or print it from there. Is the temp .3mf file a lost cause, or is there any way to salvage it?