What are some other reasons a paid chargeoff can be disputed, besides it not being yours? Can you dispute the credit limit or the high balance? Or how late it got before it was charged off? Is this enough to put the whole item in dispute or is just that part of the item that's in dispute?
If it was a positive account you could dispute any part of it and they would probably delete the whole thing. Being that it's a derogatory listing, I would dispute the entire line as not mine. What good is disputing a few lates on a charge off? I see no benefit to that.