File emptied and overwritten in crash - please help!

[Jeanee Miller]

Hello. I was working on a css file, when Notepad++ (6.9.2) suddenly crashed. Upon reopening the program, I found that it had emptied my file and saved this empty file, overwriting my original file. So, now I cannot recover my css file. I have checked in the User/AppData/Roaming/Notepad++/backup folder; however, the lost file is not one of the ones listed there.
There is also a crashdump file that coincides with the time of this crash, but I am not sure whether that could be of any help in recovering the file.

I am hoping that there is some way to recover this file - even if it is an earlier version of it. And also, is there some way to prevent this from happening in the future? I’m a little heartbroken at the moment.

Thank you in advance for any advice.