You can use this setting to determine the line operator for a vessel visit created as a result of an IFTSAI message.
true (default value) - N4 creates a vessel visit using the vessel operator specified in N4.
false - N4 creates a vessel visit using the line operator from the EDI message. Also, N4 adds an entry for the vessel operator in the EDI message to the vessel visit lines (Vessel Visit Inspector > Lines tab).