FLOW (Parallel 42) Problem

I’ve made about 30 Sea Plane Bases, lighthouse locations, and Docks for RTMM. I’m very excited about the new FLOW program because the new “Location” feature can put me right at the helipad very quickly. But on 3 of these, instead of starting on the pad (as all the rest do) these three start about 30,000 feet and allow the aircraft to drop. I followed one all the way down, it gets “close” but a couple of miles off the mark. What could be causing just these three to behave in this manner?