I removed a variable but somehow it did stay there

This can probably be fixed, but previously I've just edited each run and saved it without changing anything and that run will have the variable cleared. However, if it's Luigi's Mansion, you'll probably want to wait for a fix because it might take a while. :P

Another variable related bug is that if there are two variables and you delete the top one, the options on runs for the first variable become what is shown for the second (and only remaining) variable. Can be fixed the same way.