Duplicate own posts is a violation of paragraph 12 of the rules of the forum. It can also be equated to copying/pasting of someone else's posts (p. 33).
This is no different than copying someone else's post and if you do this then you have absolutely no intention of contributing here and you're 100% only doing it to farm your account and/or bleed bounties whilst putting in no effort at all. It's scumbags like these that are destroying the forum. If they're too lazy to actually make posts then don't bother.