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No matter what you send to the CRA, it will still undergo an "Investigation".
However, before you do anything with the CRA, you need to make sure it is reported as paid/satisfied with the courthouse or it won't get changed with the CRA.
I didn't have proof that it was paid, I just knew i had paid it. I called the courthouse and they looked it up. They told me to come and get a letter and send it to the CRA's. I did, and they updated it. I'm sure they verified it with the courthouse first, but it was maybe a couple of weeks before I got the letter back saying they had updated it. The letter actually directs the CRA's to REMOVE the entry, but only Experian did it. TU and EQ won't do it...but I keep sending them letters asking them to just in case one day they do it. Good luck with yours!