I don’t know why since they have been seen or optimized within the past 15 months. Which (I thought) was enough to keep them visible in the MP. Or maybe I don’t understand the QC rules?
Unfortunately, a QC product being viewed or optimized in the last 15 months is not enough to keep them visible in the marketplace. Even a past purchase is not enough. There was no official announcement, but it seems that a purchase within the last 15 months is the only thing that will keep a QC product in the marketplace. I hope you’re able to find out what the issue is with your products.