Saving MLT files

Hi please experts for advice: I make changes to a saved MLT file and save it - previously it was saved under the same file and now it is saved as another file with the same name but with the date of change added. Can I somehow save as before to the same file. I use MLT files prepared like this for my projects, which I then insert as a “shot” and the extra files make my job more complicated. Thanks for the advice - I am only 100% a user of the program - not IT. I hope I have described it clearly.

My last video:https://youtu.be/LYLdWhoFvdo

Maybe you have enabled Settings->Backup
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Great video, by the way