Sorry for taking so long to get back to this, but yup, routes across the Better Asteroid Belt were fixed, but still having issues with connections heading towards the sun. Not sure how the lines are drawn, but there are definitely no real routes connecting to the sun, since RSC is not enabled.
Tested with just Moshine Orbits Vulcanus and Secretas Orbit Patch; no Better Asteroid Belt or Redrawn Space Connections in either case. Afterwards, I tested with just Muluna and Cerys (two of the most common moon mods) and got the same issue.
One minor thing of note, is that the sun is technically a real space location (needed for PlanetsLib as a placeholder for the star graphic, in addition to non-standard orbit sprites, like those used for Apia-Carnova and Abacayba), but it is marked as Hidden, so it never has any effect on the game.
Image attached: 
EDIT, tested with just Muluna: