Wrong archive total km or duration

[deschila]

Hi,

In my etraining mobile app, the total number of km or the total duration is always wrong if I am offline (no internet connection): the values could even decrease between two sessions.
As soon as I am connected to the internet the value is the correct one but get wrong again if I shut-off the internet connection.

Is it a known bug?
How can I get rid of it?

Thanks for your support