Remove a part of formatting tags from the text to be pasted into body field (from doc file e.g.)

How to remove a part of formatting tags from the text to be pasted into body field (from doc file e.g.)?

I need a functionality in a wysiwyg module (like TinyMCE or CKEditor or any other actually which I could use in drupal 7),
which would give users a possibility of choosing which formatting tags should be removed or which should be left untouched (not changed).

I know of a plugin which removes formatting totally (pase from word - button etc.) Is there any modification for this which would give possibility of removing only a part of tags?

Many thanks for considering my request,

Marcin