Hi warrior members

Hi, I had a question about Amazon affiliate program. If you choose to link to a specific product, and the product runs out, does amazon show a similar product or do you need to change the link again?

Trying to decide if using the “recommended product link” would be a better choice then the linking directly to a product.

Also, guessing that once you submit a recommended product link, then its there for good... correct? Another words, I won't have to edit that link again?