Plutonium

Me and my buddies trying to do tranzit easter egg. We get all navcard table items built but says we have the wrong nav card. We go get card in buried, come back to tranzit and all of the navcard table parts are gone. We checked all possible spawn locations. Turbine/ power parts all there, just not navcard. I even unistalled t6 and reintalled it, but still are gone. Help