Transfer Dimension Set ID from Service Item Line to Order Planning and/or Purchase Order Line

I'm trying to transfer dimensions from a Service Item Line (Table 5901) to a Purchase Order Line (Table 39). My team is using Order Planning to first, calculate the plan, and second, create the Purchase Orders. The dimensions are not copied to the Order Planning lines if the demand type is Service. Since it seems that the Order Planning Lines use Dimension Set ID regardless of the demand type, my theory is that if I can get the Dimension Set ID copied to the Order Planning line, then BC will automatically copy it to the PO when the Make Orders function is used. At any rate, in SOD I've added the Dim. Set ID (Table 5901, Field 480) to Service Item Lines (Page 5903) and Service Order Subform (Page 5902). No destinations are listed when I open the "Field Transfers" option.