Retrival of data in MIGO after archiving

Hi ,

    i have archived material documents using archiving object mm_matbel,and after archiving when i open an material document in MIGO t-code some fileds are missing like:Vendor name, Manufacturer,

                        MPN Material field missing-Material tab .

                       Qty ordered, GR qty fields missing- Qty Ttab .

                         Del. Compl indicator PO item missing .etc.,

how to get these values into migo after archival .is there any pirticular infostructure needs to be activated?.(i activated SAP_MATBEL_MARI infostructure).

Thanks,

Krishna.