Broken Airway

While planning a flight from Christchurch (NZCH) to Hong Kong (VHHH), I noticed an airway that is present on the charts and that Navigraph recognizes when right clicking, but when used as part of the route results in a dashed line (from an unrecognized point on the airway). The point that Charts fails to recognize is one of the endpoints of the W11 airway, MIA (Manila VOR). Oddly, when used in the opposite direction (starting the airway at MIA), Charts recognizes the point. I did notice that this issue has been raised before, in this thread with no response from support. Charts not recognizing W11 airway in philippines