Many users have reported problems with Watopia routing since the latest update. Specifically, users are selecting particular routes (such as the Mountain 8) but not being routed as planned.

Today, this was posted by Eric Chon on the Zwift Riders Facebook group:

IF YOU ARE EXPERIENCING ODD ROUTE ISSUES WITH THE LATEST UPDATE:

 

Delete your prefs.xml file (located in Documents\Zwift) and then just re-do all of your selections/settings in the game the next time you log in. The legacy route selection (pre route update) is causing issues and nuking the prefs.xml one time will eliminate the issue going forward.

 

RICHMOND is still an issue, unfortunately. That should be fixed soon.