After converting 3 tracks to courses on GEM and synch to GEW only 2 are showed in the collection but with not data

Hi,

After converting 3 tracks to courses on GEM and synch to GEW, on it, only 2 are showed in the collection but with not data.

It says on each of the 2 courses:

1st line: Generic

2nd line: Dec 31th of 0000 20:53

3rd line:  no location data available.

Funny though the 3 courses are perfect on GEM...