What happens if I remove a field which controls conditional logic in a form?
If you try to remove a field which is used in conditional logic, you will be shown an on-screen warning message telling you that removing the field will result in the conditions being deleted.

The warning also lists the sections which are conditionally displayed from a selection or an input in this field.
You can choose to retain the field by clicking No, go back or to delete the field and its conditional logic by confirming Yes.