Erase all data of a file

Its the tird time it happen.I was coding and needed a function in another project so I go to the other project,copy the function,then go back and back at my project the last file I edited is all erase.

I only had that when I used our internet at work... It's s..low To avoid it i just open each project in its own tab to copy stuff around. Sometimes it also helps to try a different browser

I'll try that but now have have to rewrite all the file XD

Something similar happened to me too, I was coding then I decided that the file that I was coding was not needed and could be merged with another file, so I clicked on the delete icon of the file and confirmed the delete, the whole folder that was containing the file got deleted.