Unfortunately I had the Instant Replay OFF (everytime I update the GeForce drivers it goes off ).
Anyway this is what happened:
I had a planet and a moon very close to each other. I wanted to map the moon so I shot a probe at it and I noticed that also the planet on the side started showing the surface grid when the probe hit the moon and I saw the planet being mapped too!!! The planet mapping was synchronized with the moon, you can imagine the mapping radius growing at the same time in the very same position on both bodies, but on the planet the radius was smaller (becuase the planet is bigger I suppose) and when the moon surface was completed, so was the planet (only graphically because it's not mapped in the system map).
If some FDEV wants to reproduce it here below is a screenshot with the body name (moon is selected): system is TEQIA LG-Y E970 (discovered today by me on EDSM).
Anyway this is what happened:
I had a planet and a moon very close to each other. I wanted to map the moon so I shot a probe at it and I noticed that also the planet on the side started showing the surface grid when the probe hit the moon and I saw the planet being mapped too!!! The planet mapping was synchronized with the moon, you can imagine the mapping radius growing at the same time in the very same position on both bodies, but on the planet the radius was smaller (becuase the planet is bigger I suppose) and when the moon surface was completed, so was the planet (only graphically because it's not mapped in the system map).
If some FDEV wants to reproduce it here below is a screenshot with the body name (moon is selected): system is TEQIA LG-Y E970 (discovered today by me on EDSM).