If you want the migrated mapping in Org 2 to use the same object path as in Org 1, you must maintain the same schema and table in the PostgreSQL connection for Org 2.
For example, if you have two different connections, Connection1 used for Org 1 and Connection2 used for Org 2, the object path for the schema and table name must be the same in both the connections:
Connection1: SCHEMA1/TABLE1
Connection2: SCHEMA1/TABLE1
In this scenario, you do not need to override the schema and table in the advanced properties.