[FIX] base_external_referentials fix sub-mapping
[FIX] base_external_referentials fix sub-mapping

gurneyalex/connector,anybox/connector,gurneyalex/connector,Endika/connector,guewen/connector,js-landoo/connector,BT-fgarbely/connector,mohamedhagag/connector,esousy/connector,Endika/connector,zhaohuaw/connector,fevxie/connector,maljac/connector,dvitme/connector,acsone/connector,brain-tec/connector,guewen/connector,anybox/connector,hugosantosred/connector,zhaohuaw/connector,js-landoo/connector,maljac/connector,open-synergy/connector,fevxie/connector,esousy/connector,Antiun/connector,BT-jmichaud/connector,open-synergy/connector,sylvain-garancher/connector,brain-tec/connector,BT-ojossen/connector,sylvain-garancher/connector,brain-tec/connector,MindAndGo/connector,acsone/connector,Antiun/connector,BT-ojossen/connector,dvitme/connector,BT-fgarbely/connector,hugosantosred/connector,acsone/connector,MindAndGo/connector,BT-jmichaud/connector,mohamedhagag/connector