From my understanding no they cannot. Once the account is sold to a CA, the OC must stop stop reporting on their own. For example, if you have a collection with Verizon, and they sell the debt to NCO, only NCO can report. If NCO in turn sells it to Midland, then NCO must stop reporting.
I have this same problem on my TU file. I have a judgement that is also listed under two other names, totalling 3 TL from one account. I've disputed, but it keeps coming back verified. Anyone else know how to deal with this?