Yeah, I'm now convinced that the supposed unsigned routes 375, 394, and 396 are not (any longer) province-maintained.
Tonight's pull request will remove 394 and 396 from the HB (375 already gone), make conforming changes to intersecting routes, and add 56 and 204. I'll defer the other changes yakra suggested to a later pull request, including the complicated change to 363. That route's shapefile doesn't match the signed route in Moose Jaw, but the signed route was a real mess when I clinched it in 2016, and it's possible I accidentally clinched the shapefile route while trying to follow the signed route.
BTW, 364 is in the traffic count report, but not in the HB. This route is well-known to be unsigned. I expect to be back that way this summer, and will try to check on whether that's changed now with major improvements to the 364/TCH 1 interchange.