Hi,

Thanks for your reply. I had a quick look at the tram route in question and saw that the route relation had ways not ordered properly as well as some ways missing. I've fixed those issues in this changeset: https://www.openstreetmap.org/changeset/162954477 , but I'm unsure whether the routing application you mention uses those relations or not, so it might not fix this specific issue. Nonetheless, it's good practice to make sure the route relations are done properly as it can cause routing issues on routers relying on them.

Hopefully you can find a solution to the problem. You haven't broken anything from what I can tell barring some minor issues with the route relations.