I have deleted a number of collections within Shopify but after a short time (30-60mins, maybe less), the collection reappears in the back end with the correct Conditions all set up and the collection therefore populated (but with a different ID to originally). For the same collection, I successfully added a URL redirect, which then disappeared from the redirect list. Other redirects I added at the same time in the same way are still in the list. What process is reinstating these deleted collections and removing redirects?