In your project folders are there now two xml’s the ones you use to load your project in?
Get us a screenshot of inside your prect sources folders.
Highly recommend having a backup folder for your prejects and save a copy there before making any changes that your not sure about making especially to project files.
Also as what happened to me recently i hadn’t made a backup for a week after making changes to a project and my storage drive which had my master project files in it decided to die so i had to redo nearly all the changes I made to one project. I got lucky my models files were on another drive and that I had backup up all my other projects.
Highly recommend backing up your project files and models and textures to google one drive or similar. then even if you whole pc died you wouldn’t lose any of your work.