stunning discovery

[Data]

I've read a while back on a thread about the difference in resource extraction between a mining ship / station and a colony and some interesting implications (i'll not go into that as it is already available)

I've decided to find out another thing: if when i build a colony at a planet where i already had a mining station will the station be just dropped or somehow absorbed by the colony and therefore provide faster extraction time than on a regular colony?

The result was negative, the station is just dropped but in the process of monitoring this I discovered that for luxury resources at planets the amount in the qty column steadily increases. This does not happen for strategical resources.
Not sure how this would be helpful as the % column remains unchanged so you surely cannot mine it faster even if it becomes more abundent over time.

Maybe it counts against the galactic total stock? I would not think so as this is the natural reserve of a planet not something that you extracted and have in stock. At the very least, it's just another tiny aspect which makes the universe in this game so alive and evolving.