Attached file "HR_CAD original basecampNOK.gpx" is not accepted by Basecamp v4.5.2.
This was exported by QMS v1.6.0.pre.
But "HR_CAD modified basecampOK.gpx" is OK.
I manually reversed each HR and CAD lines:
to make it work.
Maybe this is a Basecamp bug, but I have no way to know who is wrong and who is right here.
seen on QMS v1.6.0.pre W7 64bits