Because of the ubiquity of the internet, the vast volumes of data available to us (and therefore you, the SN user) and new security requirements imposed by operating systems, Starry Night 7 has introduced the idea of a "dynamic" (writeable) Sky Data folder.
In previous versions of SN, the application itself would edit (write to) files in its own Sky Data folder located either in the application package (on OSX) or in the Program Files folder (Windows) and this is now considered very bad behavior.
For that reason, any time SN needs to write/modify a file, we so in a new Sky Data folder located at:
(Windows) \Users\<YourUserName>\AppData\Local\Simulation Curriculum\Starry Night Prefs\
(Note that the AppData folder is often "hidden". A quick Googling can show you how to un-hide it)
(OS X) /Users/<YourUserName>/Library/Application Support/Simulation Curriculum/Starry Night Prefs/
Note that this is where any "streamed" data will be located too.
While we've made every effort to hide this ugliness from you the user, if for any reason you want to get your hands dirty and edit a file manually, it should first be copied to the same respective path (e.g. /Sky Data/Planet Images) in this new folder, then edited there.
Any file located in this new Sky Data folder should have the effect of overridding the one in our static Sky Data folder.
Now, for the part you've all been waiting for. How do you get all of your Equipment, Distance Spheres, Locations, Preferences, Custom (User) Planets etc. from SN6 to SN7?
Simply copy the individual files from your old "Prefs" folders into the matching locations in the new "Starry Night Prefs" folder!