Multiple EAN changes not getting triggered through Change Pointer

I have scenario where user can enter multiple EAN in material master ( under Basic Data - Additional Data setting ). User can select one EAN number can be main EAN number and other are not. If user delete, change or add any EAN number other than main EAN , then using Change Pointer IDOC should trigger. I have made all required setting using WE82 and BD50 and made the following entries using BD52 transaction -

My question is using above setting , whenever I change, delete, add any EAN ( other than Main EAN ) IDOC is not getting triggered. This setting works for only MAIN EAN. Please help to work it for other EAN's

Thanks

Sachin