Impact on DG master when we delink material from Specification

Hi,

I have set up DG filling Process and it is updating DG master as expected. But I have some following question on DG master deletion.

When I delete material assignment from specification ( Real substance). I see that material still shows with DG master data even after I run filling. I believe filling only updates data for linked material.

The only option I see is to go in DGP2 and delete all regulation data.

Is this standard behavior or is possible when we delete assignment DG master can be deleted.

Thanks

NS