That doesn't solve the issue for you. Survey Points relate to grav surveys not geo surveys.
Huh, didn't realize that.
Anyway, the issue I have now after many attempts adding new designs with SM, is that my separation range doesn't stick.
I always set it to zero when I create the missile, but after I fire it, it looks like it retroactively changes the value to 150,000 kM again. EDIT: False alarm. Guess I'm still having trouble with the interface, and should really have checked the option for surveyed bodies being highlighted earlier.
Turns out Luna was already surveyed, but it had nothing, and there was no event log entry to tell me that.
Turns out Mars is also without minerals on a first sweep! Darn :/