Change pointer for MARD creation and modification

Dear experts,

I'm implementing master data distribution using idocs with a logistics partner and I facing the following problem.

I'm not able to generate change pointer when I create a material storage location view in MM01 (Table MARD). Even when I change it by setting the deletion flag via MM06.

I see the change documents in CDHDR/CDPOS table but no change pointer in table BDCP2.

The change pointers work perfectly for all other changes I can do in MM01/MM02 on MARA, MARC, MARM data.

In BD52 I have the following entries :

MATERIAL MARD KEY

MATERIAL MARD LGORT

MATERIAL MARD LVORM

MATERIAL MARD PSTAT

Any idea why I don't get any change pointer when creating/changing material storage location view ?

Thank you.