Please consider putting this refinement on your update list: When splitting routes, use a naming convention for the split routes that pads the first 1-9 text numbers with a 0? 

This will allow the By Name lexicographical sort(?) to sort as if it is a numerical sort 

FORMAT: NN [separator] NAME where: 

NN = a number (usually 2 digits, e.g., 01, 02, 10, 11) 

separator = either "_" or " " (underscore or space)

NAME = a sequence of letters/words (the descriptive part)