_nef_sequence.index vs _nef_sequence.sequence_code

[kumar-physics]

According to definition '_nef_sequence.index' is a sequential number starting from 1 and '_nef_sequence.sequence_code' is the author specified sequence position (old PDB like numbering).
My question is "Can I safely assume that '_nef_sequence.index' will match the '_entity_poly_seq.num' or '_atom_site.label_seq_id ' in the corresponding mmCIF file?"

Thanks