What happens when impdp with dblink will REPLACE the same table?

Oracle 11.2.0.4 on AIX 6.1 or AIX 7.1

I just write a Procedure with which application peaple can copy tablespaces von between different instances in they own schema. For this i use the network_link option of impdp. The procedure should also avoid some errors which currently can happens with the impdp utility : perhaps using TABLE_ACTION=TRUNCATE und use the same table and the same instance ins the dblink. I tested it with the impdp utility and the impdp wrote error message: it works as design: first the table was truncated and after this the data the truncated table was copied with the result, that - from now on