https://github.com/TravelMapping/HighwayData/pull/4194Assumes that old AB43 does not receive a new number, and routes intersecting it are not extended.
Not bothering with adding AB43X as an AltRouteName or adding its AltLabels to AB43, as only
oscar has traveled AB43X, and presumably will need to edit oscar.list to unclinch the new bypass segments. In any case, I know you stay on top of maintaining your .list file.