Value for custom field is not getting saved into MARA in MDG

Hi,

We have extended MARA table with one z custom field. Then we have done all MDG processing for the same field like extending the mapping structures, data modeling, SMT mapping. This field stores value in staging but after final activation it is not getting saved in MARA. We have also made entry into table T130F for this field. Am I missing something here?

Thanks in Advance,

Jitendra