Are creditors required to stop putting negative comments on your credit report after a discharge?

I filed for Chapter 7 bankruptcy in late April. Had the 341 meeting in early June. Received the official discharge last week. Not that my credit report even means anything anymore, but I ran it just for kicks. I noticed where my now former creditors took the time to post negative comments AFTER the discharge. Next to each creditor, it does state "debt discharged through Chapter 7 bankruptcy", but it also states things like "debt charged off" "in collections" and "180 days since last payment". Those comments are listed after the date of the discharge. Can they continue to do this? And, are they technically even considered my creditors anymore? None of them have called me or sent letters or attempted any kind of communication with me. But, they sure are taking liberties with my credit report. Or, does it even matter since having a bankruptcy on my record pretty much kills it anyway?