When building routing-policy on BGP peering changes became active directly during routing-policy modification, before command "refresh bgp x.x.x.x export".
If router support refresh capability, it's automatically make the export policy effective once you change the route-policy, because it can send new BGP update after applying new route-policy without notify the peer.
But for import direction, you must use “refresh bgp ** import" to notify the peer send the BGP update again making it effective.
Our router different from Cisco routers in this question (cisco doesn’t apply export policy before export command). So keep this in mind.