Missing checkbox in segmentation form

Hi

The segmentations form, named 'crm.segmentation.form' has a commented checkbox, concerning the field 'sales_purchase_active', under the 'Sales Purchase' page of the notebook definition.
Without this checkbox, specifically without the possibility to tick it, the whole 'Sales Purchase' part is useless because it is skipped by the code.
Is there any reason not to include it in the visible parts of the view?