As the image above shows, in the current Early Access version, I have placed a Tier 2 Miner onto a Quartz Node - one of 6 such nodes that are close together in the North-East of the map.
On loading into the Experimental version, I found that one of the 6 miners is no longer on the node. Did the node move? Or has the miner been misplaced when loading from the save file?
The other 5 quartz nodes in the area are unaffected.
I am unable to place another miner on the node's new location.
The old miner is still producing quartz.