UFO (green one? UFO Bomber?) grav-lift does not function. Units trying to go up or down path to the other grav-lift to get to their location. There doesn't appear to be anything invisible blocking their pathing.
Mission save file may be incorrect, but the UFO should still be in the Cityscape to test. Sorry!
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Mission save file may be incorrect, but the UFO should still be in the Cityscape to test. Sorry!