Thanks for the response!
Sorry my bad, Badge ID is he Employee ID.
Take these two rows:
INSERT dbo.Source2(EmployeeID, ClerkID) Values(123456, 'abcd');
INSERT dbo.Target2(EmployeeID, AssetValue) VALUES(123456, 'abcd');
yes, no update
INSERT dbo.Target2(EmployeeID, AssetValue) VALUES(123456,...