I have just upgraded from the Garmin Forerunner 945 to the 965 and the weekly kms were working perfectly on both devices. Then I made an upgrade on the 965 and the weekly kms reset to 0. I have ran 22 kms since Monday and on both devices and week start is set to Monday, but on my 945 the weekly kms show correctly and in the 965 they don't.
What happened once I made the update?!