[FIX] import deprecated external_referentials
[FIX] import deprecated external_referentials

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