This happened to me, and I know it has happened to several clients of mine as well. Here’s the scenario:
You have a credit card account that was charged off a couple of years ago. You assume (correctly) that it is hurting your credit scores. After sending a few rounds of dispute letters to the credit bureaus (Experian, Equifax, and TransUnion–the “big 3”), you are unable to get it removed. During those months that you are working through the dispute letter process however, your credit scores see a big jump. What happened?