IMO I would suggest sending whatever information they are requesting. I filed Chapter 7 BK in October 2006 and was discharged in January 07.
There were a couple of accounts on my credit reports that were not showing as IIB (Included in Bankruptcy). Some of the creditors updated since I disputed the information a few others did not. When I requested that the CRA dispute the accounts again, they asked for verification, since the info came back from the creditor as verified.
I sent in the requested information and my accounts were updated with the correct information. No questions asked.
You want ALL of your accounts that you included the show as IIB with a 0 balance. As you stated you want your reports to be accurate.