Hi!
I was working on my project on October 4th, 2021. The .drawio file was saved to the flash drive. After a while, I accidentally cleaned the USB stick and formatted it. It turned out that I needed the deleted data again and I recovered it as best I could. I'm not exactly sure if this is the data that I need, but the problem is as follows. When opening a .drawio file, the desktop version of the program writes that the file is empty, as I indicated in the topic. However, I still have the .BKP & .crswap files from October 4th. I can attach a folder with recovered drawio files.