Hi,
Sure could do, but already you cannot issue a colonization order without the necessary amount of load. You are not meant to send a colony fleet to colonize using the move order, but rather the colonization command which will not allow you to do so in case you have not load it it. The colonization order will automatically send the ship to the target system hence no need to use the move order.
Did you sent the colony fleet using the move command button or the right click short cut?