Exist such IDA plugin or functionality ?

[DARKER]

I try that, but it produce a lot of "mess".

Interesting idea compare it with before and after output ... but it's still manual job and comparing big project files can be tricky ... maybe some script or plugin can do it as well... question is if IDA internal DB structure has some "flag" that mark "this is user change" or something like that ... than it can be maybe done automatically