You have gaps and unordered ways in this relation

https://tools.geofabrik.de/osmi/?view=pubtrans_routes&lon=145.01030&lat=-37.82519&zoom=13&baselayer=Geofabrik%20Standard&opacity=0.50&overlays=ptv2_routes_invalid%2Cptv2_error_ways%2Cptv2_error_nodes

Also, you have this route stopping at two different platforms at flinders which seems wrong for a single route