Refinanced auto loan, old account closed new one opened with same debt but credit score dropped 60+ points?

Question by AJ: Refinanced auto loan, old account closed new one opened with same debt but credit score dropped 60+ points?
I refinanced my 60 month auto loan which was at 6% to 3% at the 20 month mark to save myself some money. I refinanced with a new bank and the terms are now 40months (but since I paid 20months into the 60month term the balance and payment is pretty close to the old account). I subscribe to transunion and can see my accounts/credit scores. I noticed when the old account

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