Apple Activity Monitor on Apple Watch: Mapping

I like to use my Apple Watch 1 -- with all updated software -- when I go on an outdoor cycle ride, run or long walk. After the recent software update, a great new feature suddenly appeared: I could come home, look at my iPhone 6, and check the activity monitor app and see a map of where I had just exercised. Just like the mapping feature on Runkeeper and other athletic apps. At long last this feature had come to the Apple Watch. In fact, I was surprised this feature worked on Apple Watch 1 as I had thought you needed the Watch 2 for it to work.

Now the bad news: For some reason this feature has now STOPPED working on my Apple Watch 1. Featured crapped out 4-5 days ago. Where did it go? Everything else is working fine but this great feature has now disappeared. When I complete a run or bike ride all the other data is there: but no map of where I just exercised. Doesn't matter if I had taken my phone with or without me. Post-exercise mapping history has disappeared...

Please help.