[feature request]compare twice to filter files not modified

[hyaray]

if I changed file A , and then restore it, "File content" is the same, but updated the "modified time".
I want the old file can cover this.

so after compare by "file time and size",I want compare the current file list by "File content",
and the older files recover new files by default!!

Thanks a lot, looking forward to your reply!!