Removing the Repeat field will stop any future occurrences from being created but it won't delete any existing occurrences. So if you already have a few occurrences of the task (past or future), they will remain on your list.
When you change or remove this Repeat value, it should change it for all occurrences of the task as long as you're using an "every" repeat.
Does this explain what you're seeing? If not, can you give some details so we can take a look?
Hope this helps!
Posted 2 years ago