I drove out yesterday to the newly-extended Lahaina Bypass (HI 3000). An unexpected find was that HI 3000's south end isn't where the HB now has it, at an intersection with HI 30. Rather, it starts about 0.5 mile southeast, around where the new bypass pavement peels away from the old HI 30 alignment at a now-closed intersection. That short segment is clearly signed and milemarked as HI 3000, but is an implied concurrence with HI 30 which continues both west into Lahaina and beyond (via a short new Southern Connector road) and east to the Olowalu Tunnel and beyond.
My leaning is to extend HI 3000 to what is now HI 30's *OldHI30_E waypoint, name that endpoint HI30/*OldHI30 in the HI3000 route file, and rename it HI3000/*OldHI30 in the HI 30 route file (retaining the file's *OldHI30_W point, where HI 30 returns to its original alignment). It seems unusual to put an asterisk in the middle of a waypoint label, but it helps identify the endpoint location as a closed intersection.
Another option would be to make HI 3000's new endpoint simply *OldHI30, and keep the existing waypoint labels in the HI 30 route file (except HI3000 would become HI3000_N).
Either way, in the HI 3000 file HI30 -> HI30_W, and in the HI 30 file HI3000 -> HI3000_N (since HI 3000 is a north-south route, while HI 30's overall direction as a three-quarter-circle route is east-west).
Any thoughts, in particular whether mid-label asterisks will confuse the system?