After looking at the github conversation, I believe I am being asked if it is ok for you guys to make the change to get SC 31 fully in the SC State Highway list.
The way I do updates for any of my states is to copy/paste the route waypoints off the github file for the route, make the changes in notepad and save on my PC, then when all changes are done, e-mail them to Jim.
I do it this way to ensure I don't unintentionally undo a change somebody else might have made with or without my knowledge.
So my repository is only good for dire emergency - as in the github site completely loses the file and cannot be recovered.
Short answer: yes...please make the fix to SC 31