Refurbishment order reservation

HI SAP Gurus,

I need some help!

If i create a refurbishment order (pm04) for a material that is going to be repaired, it creates a reservation for that material. If i look at transaction MD04, it shows the material as a plus and not a minus. If i order material on another order it makes it a minus.

Even if i order spares on the PM04, this works fine, but not the material that the PM04 is created against.

The problem this causes is for the SCM guys when MRP runs. I checked if there is settings on spro, but found nothing.

Is this SAP standard?

Please help.

Thanks