Any normal OMNI and ORB soldiers being sent here are being told to either guard the 'shipment' and or help the OMNI enforcer out. Anyone who has not directly been told about it knows nothing.

This is in mid CE 71 which is the reason why Forbidden, Raider and Calamity exist and or let's just simply throw that fact out the window and say the daggers were the second set of plans drafted and put into design first. This is Mid 71 so let's just assume the gundams came into a snag of some sort mid development and were delayed. Meanwhile Stone used ORB resources to build the last three along with the Astrays Red Gold and blue. ORB already had the MBF-M1 M1 Astray out and ready but it took Earth a bit longer to produce Daggers.