I was added to a credit card as an authorized user in February. My scores jumped by 40 points. This account is still reporting to Experian and Transunion. I received an alert last week stating that Equifax had randomly deleted this account. My Equifax score is 50 points lower than my other two scores. How can I force Equifax to place this account back on my credit report, and why would they delete it?
It is more likely that the CRA did not make the separate removal determination.
It is more likely that, for some reason, the creditor decided to report removal.
I would begin by contacting the creditor who was reporting to the CRA and ask if they decided to terminate the AU reporting for some reason.
You can just send a letter to the dispute department and give them the account number and creditor and ask them to add the au account. I had this happen before and they responded by adding it. If you call the lender they likely won't be able to tell you why the account was deleted from one CRA. It was likely some technical glitch and not intentional.