Not an issue.
I would suspect that a later "date opened" was reported by a debt collector on their collection? That date opened has nothing to do with the OC account.
All of the dates used under the FCRA to regulate credit report exclusion of an adverse item of information are set based on when the adverse item occured, with the special definition of DOFD when the item is a collection or charge-off. Being based on your activity on the account itself,those are factual dates that later reporting cannot alter based on their activities.
