Ah, no, I hadn’t tried “remove” because telling it to remove something it can’t find didn’t seem the most intuitive thing to do I guess. But in fact that does seem to have done the trick so many thanks PP. 
Ah, no, I hadn’t tried “remove” because telling it to remove something it can’t find didn’t seem the most intuitive thing to do I guess. But in fact that does seem to have done the trick so many thanks PP.