nil rated & taxable supply in single bill

sir/mam
suppose we sell B2B, Taxable & Nil rated goods in one bill, where it is to be shown in GSTR 1??
As by using offline tool it gives error on nil rated item, & manually it does not allow me to save such bills.

whether I hv to show nil rated part of bill in table 8, (as under 'supply nil rated to registered dealer')
since the same tax invoice will get reflected gstr 2a 
& I don't think that we can bifurcate the tax inv. in two section.

so, please clarify