?? About removing coins from sold inventory

When one deletes a coin from their inventory, it goes to sold inventory. There used to be a way to reverse that, does anyone remember what it is?
I know it can be done by adding the cert number back as if it was new, but there used to be another way also.
theknowitalltroll;
MY COINS FOR SALE AT https://www.pcgs.com/setregistry/collectors-showcase/other/bajjerfans-coins-sale/3876
MY COINS FOR SALE AT https://www.pcgs.com/setregistry/collectors-showcase/other/bajjerfans-coins-sale/3876
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