processVoucher BSSV did not populate the Tax Exp Code, TaxRate Area and pay Itm in GL distribution

In E910.  successfully duplicated a voucher by using processVoucher BSSV.  All look perfectly match the original voucher except few field in GL distribution were not populated.  They are :

   Pay Itm, TaxExpCode  (  EXR1 ), TaxRate Area ( TXA1 ) 

  I checked the table.  F0411 have Pay Item, EXR1 and TXA1 are populated correctly.  But they are missing in F0911 table../

What did I miss in my payload?  is there other step need to be performed so they were poplated in F0911 table?