exactly same thing here. I use feedwordpress to syndicate a custom news search. Every now and then I edit the items to add an image, change the layout, etc. However, when I check back later, the changes are overwritten.
I’d like to see a setting that prevents one user overwriting or changing another user’s post. So when I edit a post, the user is changed to Admin. The syndicated feed cannot overwrite this edited post.
Dunno if this is possible