From an older topic, there's a suggestion by jeremiah.moss:I think "fields used" should be per-folder, and not universal. My shopping list certainly does not need timer, due date, due time, etc. Yet, because another list does require them, I have to make them available everywhere.
https://www.toodledo.com/forums/2/14676/-81947/read.html#jump
I think that it's a good suggestion.
