Hello ​@Art_P, I’m not sure what you mean when you describe segments marked with an asterisk. Can you provide more detail about that factor and possibly a screenshot or two?

Could it be that the segments are a net downhill? Only flat or net-uphill segments will show up as live segments.  Anything with a net downhill, even if only a couple feet over the full distance, will not work for live segments.  

I noticed that live segments do not work during ride gravel activity.