When someone purchases something off of your registry, does BB&B remove it completely or do they mark that it was purchased. I'm getting confused b/c I was suer that I registered for corningware but it's not on my registry. I was going to add it online but now I'm thinking it may have been bought already. I can't find the registry I printed out (it will turn up). I'm not sure if it was purchased of if it just didn't scan. Thanks.