Do we know WHEN the problem occurs? I guess not as it hasn't been fixed yet, but do you have any idea if the fault lies with gamma 2 or in gamma 6, or anywhere in between?
Maybe i am wrong, but i noticed, that the rescued units in Gamma 2 dont arrive in Gamma 6, when i build to much ripplerockets and howitzers and the sensortowers like mousemaster describes at the entrance for the gamma 6 mission. When i did not build the sensortowers and the artillery the rescued units arrived and everything is ok. It can be no coincidence. But make it, like i describe above. Send all your experienced units to recycle in Gamma 2 and only 1 truck to the rescuezone. The screenshot shows which towers i mean.