Incident forms are searched in the order specified in the properties. If a form exists that matches type_division_stage, it will be used. If it does not exist, a form that matches type_division will be used if it is found. Otherwise, a form that matches type_stage will be used, followed by a form that matches type. Edit the properties file to reorder or remove items from the search list.
If no custom form is found, the default general form will be used. Incident forms can use custom properties defined using the "Configure UI" facility.