"By default, all tables and views existing in a particular schema on the foreign server are imported"
The emp table did not exist when you did the initial IMPORT FOREIGN SCHEMA. You will need to import it using either CREATE FOREIGN TABLE or IMPORT FOREIGN SCHEMA. NOTE: For IMPORT FOREIGN SCHEMA you can exclude the existing table using:
EXCEPT ( table_name [, ...] )
> > I have done those things only, no configurations done. >