ISA definitions are migrated from the TPEC Interchange Records.
Interchange Control Standard is hard coded to "U" for versions previous to 00402 and to the value specified by DefaultRepetitionChar in the TPEC2CM Configuration File for versions 00402 and higher.
Partner Names are build from either the Corporate ID in the Partner Record or, if not found, from either the TPEC Interchange or TPEC Relationship record as specified by DefaultPartnerNameFrom in the TPEC2CM Configuration File. If there are duplicates the ISA Qualifier and ID are appended to the name.
Application Partner names are built from the Relationship name. If there are duplicates the GS ID is appended to the name.