Regardless of whether they are reset or not, like it was said earlier in the post, previous infractions will not hurt you if they are not recent.
Although there is no concrete definition for what is considered recent and what is not, it does not take a genius to figure this out. If your last ban was 6 months ago for excessive swearing, chances are that will not be held against you. On the other hand, if your last ban was a week or a couple of days ago, that will most probably be taken into account.