I agree that the routing described does not make much sense.
I'll wait before submitting the edits in case someone with a better understanding of the situation can confirm the routing.
What was IN 9 between Broadway and I-74/US 421 is no longer a signed highway
What was only IN 44 between Harrison St and Progress Rd is now IN 44 and IN 9
What was IN 44 and TRK 9 between Progress Rd and I-74/US 421 is now IN 44 and IN 9 but not TRK 9
What was I-74/US 421 between exits 113 and 116 is now I-74/US 421/IN 9
What was TRK 9 between Broadway St and Harrison St is still TRK 9