Work Order Does not show Demand Pegging

We have created a new plan for the purpose where no Planner Order should be generated by Supply Plan. This we have achieved by creating a simulation set and adding all the plan item with Create Supply as "No"

This is done to achieve the plan should only use existing stock and planned Order to be created only for Transfer Order which is working fine.

However for this plan we are observing issue where some Work Orders are not showing demand pegging. These same work Orders for other plans are showing the demand pegging.

Regards,