It would be a serious error to assume that fixing one credit report fixes another. Notify everyone, and then check and recheck it.
I'm not your attorney; my answer includes assumptions. If you want me to be your attorney, I'm easy to find.
I agree with my colleagues here. Be sure to check all three reports and dispute with each of them. If you disputes are not successful, you may want to speak to a qualified consumer attorney who is familiar with the FCRA. The FCRA can be a powerful tool to correct inaccurate information on your reports.