Cloning Product with Waitlist

Providing a link to the page won’t help in this case. I cloned a product from a product with a waitlist. When the cloned product was published, an email was sent to the waitlist that the original product was now available. It caused a lot of confusion and can’t happen again. Any ideas how that happened and how to prevent it from happening again? I really don’t want to create new products for new ones that are close but not the same as an existing product.

The page I need help with: [log in to see the link]