Excel (.xlsx): the utility / maker data-model workbook (IS 15959 style). Sheets with an OBIS column, IC / Attribute, Data Type and Scaler, Unit give the profiles and their columns, event logs, push setups with their object lists, configurable parameters and the name plate.
Gurux XML: export the object list of the association (for example US / utility) from Gurux Director and paste it here, or pick the file.
The simulator copies the real structure: every object, class, OBIS code, access rights and profile columns. If the same structure is already in the library it is reused instead of being created again.