Duplicate Runs with different distances and runs

[KaizenMike]

I didn't realise this could be done - I started a tracking a run yesterday in the phone app. About a minute later my watch vibrated and the screen was asking do I want to track run. I wanted to get an accurate distance so got GPS connectivity and also wanted to track my heart rate.  At the end when when i went into the app - the run was recorded twice but showing different statistics and only one has the heart rate.

1st run showed distance as 5.44km , pace 7'24 and ave hr 126

2nd run showed distance as 3.81km , pace 10'36 (I believe this distance and pace to be accurate as I was literally just going marginally faster than walking pace. I have tried uploading a screenshot to verify but get a message that I do not have permission to upload images. 

Can you please explain why the same run has 2 different sets of statistics, one presumably recorded by the app and one by the watch

[Rich_Laue]

Which one was correct in distance?

How close are the steps?

The one without the heartrate was recorded with the app.

Have you set up your stride?