3) So I reverted now just the Y2Y mtb route.
2) IHM's new heatmaps records every recoding uploaded to OSM without difference if its bike/hike/fly... Also at this point its since the beginning of GPS recording time. So its limited.
Strava's heatmap is the best tool used to see activity.  Use the link I sent before and filter Activity Type.  Its only the last 2 years.  
1) If changes on the ground are new, neither of these tools can reflect them. 
