I found out 2 bad keyword on my list which cost me $5 and no conversion. SO I delete them and 1 hour later still find my cost is increase but no click. So I go advanced search and do show deleted keyword and guess what? the delete keyword still get click and I still have to pay. -_- Campaign off for now until tomorrow when I can keep track or my money will burn when I sleep -_-
I guess you have taken right decision....I think it takes couple of hrs for keywords to remove from list.