Phantom materials/BOMs in routing without component assignments

Hi All,

I have the follwing setup of BOMs/Routings:

BOM:

superBOM                  Routing

     subBOM 1             operation 0030     phantom item

          component 1.1  operation 0020

          component 1.2  operation 0010

     subBOM 2             operation 0030     phantom item

          component 2.1  operation 0040

For the materials subBOM 1 and subBOM 2 I have set the Special Procurement type 50 (Phantom assembly) in MRP2.

I created first the subBOMs and then the superBOM.

My issue is that in CA03 or CA02 all of the component assignments are disappeared.

When I create a production order to the superBOM then all components will be assigned to operation 0010 in sequence 0. (first operation)

In some cases all components are assigned as an inheritance in the production order to the operation 0030 (like the phantoms has).

I checked the SAP Notes and I just found one with a report: 352375 - Item conversion in phantom assembly

Is not there any solution which I can use for multi-level BOMs where I only want the lowest level explosion with the lowest level component assignments?

We would not like to MRP the materials for the subBOMs and we only need to have the lowest level components in the production order.

Thank you in advance!

Best regards

Tamas