System Effect on MTR with 'Netting' Transfer Type

Hi Community,

I’m looking for the system effects on project MTR with ‘Netting’ trasfer type.

I follows the below scenario:
1. Set the below Project and Activity Y - Part 1

• Project  A - 

                    Subproject X - 

                                              Activity Y - Generate PR and PO for ‘Part’1 based on planned on Project Master Schedule

2. Set Activity Z, the below Porject Deliverble on Activity Z and run PMRP for the Part 1

• Project  A - 

                    Subproject X - 

                                              Activity Y - Generate PR and PO for ‘Part’1 based on planned on Project Master Schedule

                                              Activity Z - Set ‘Part 1’ on Project deverable and run PMRP

3. Project MTR with ‘Netting’ trasfer type was automatically generated described as below picture after running PMRP because only Aactivity is different between Activity Y and Activity Z for Part 1
 

Question: what is the system effects on project MTR with ‘Netting’ trasfer type?

After this MTR is generated, there is no impct on inventory transactions and material plans of Project Deliverbles Materials and Services for Activity Z. If there is material supply comming from MTR for the material deliverble of Activity Z, it could make scense but it deos not happen.