How to Get These Products Out of "Lost and Found"?

Inkubo

For the purposes of this question, a product you buy from DAZ is made up of resources like figures, materials, lights, etc. So there are product icons and resource icons in Smart Content.

I've been doing a lot of library management lately, trying to fix products with missing icons, and clean out Lost and Found. But there are some products which are very persistent about moving in there, and I'd like to know how to get them out for good.

Here's how I think Lost and Found works: when DAZ Studio encounters an uncategorized resource file, instead of ignoring it, DS adds the "Lost and Found" category to the resource's entry in the database. Then the item's product icon will show up in Lost and Found so you have a chance to at least find it, and it won't be hidden from you forever. To get the product out of Lost and Found, you categorize all the items and make sure to clear the Lost and Found category on each one. (The only way I've found to reliably do this is to click "Remove from All Categories' before checking the right ones.)

But I have encountered a couple of products that have no uncategorized resources, and no resources still marked "Lost and Found." The product icons always show up in Lost and Found, but there is apparently nothing for me to fix.

Is there anything else I can try to clear these up?