For this use LegislativeDataGroup.dat file.
You can see step by step video to load Legislative Data Group using this Link
Please find the below sample template :
METADATA|LegislativeDataGroup|Name|DefaultCurrencyCode|LegislationCode|StructureInstanceName|SourceSystemOwner|SourceSystemId
MERGE|LegislativeDataGroup|US_LDG|USD|US|US Cost Flex Instance|XXTEST|XXTEST_LDG01
