MRP Run in combination with PP/DS MRP heuristic

Dear SAP Experts,

we have a daily MRP run. In addition, the MRP (MD01N) run can be started manually.

In addition, we have in PPDS a MRP heuristic to delete already scheduled orders and create new orders.

When someone starts MRP live (MD01N), the orders scheduled in PPDS will be over-scheduled.

I would like to avoid that.

Is it possible to restrict the product from getting re-planned by MRP LIVE (MD01N)?

Or is it possible to start automatically the MRP heuristic after MD01N?

Perhaps there is a solution that the orders scheduled in PPDS will be not over-scheduled without fixing plan orders in PPDS.

Thanks in advance!

Kind regards,

Anne