Hi,
there is a strange behavior of SN8 because there are no Data File updates at all.
I've deactivated "Automatically Download Data".
After starting SN8 Pro Plus I go to Help -> Update Data Files...
After that i get a message that no data was downloaded and my files are up to date.
Then I fire up SkySafari 6 Pro and go to "Update Minor Body Orbit Data" and there are updates all the time.

Example:
I've selected in both SN8 and SkySafari 6 in Solar System satellites a Magnitude Limit of 10,0.
In SS6 there are a bunch of satellites but in SN8 there isn't a single satellite.


Oliver