Bugged mission

[_dOnK_]

One of my missions from Burg.l was to build a marker on plank cliff. I completed the mission by building the marker but destroyed it afterward because I didn't need it there. But upon reloading the game the mission reappeared asking me to place the marker so I returned to plank cliff and the blueprint for the marker was no longer there. Was this because I destroyed it? Nonetheless I cant complete the mission and am pretty much down a mission slot. Is there any way you could provide a fix for this or allow the skipping of missions for the price of raw science or something