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                The system in place to actually synchronize the values would not be a decade old. (Google fit hasn't been around for a decade!). They've already done all the ground work for retrieving information from Google Fit, getting their program to pick active time over total time would be trivially easy. This information, along…
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                You can edit it but when you refresh the page it resyncs to the "correct" time of 25 minutes. I've put in a support email and no reply yet. Seems like a bug to me, as strava and Google fit seem to be able to communicate active/total times between one another, there would be something MFP can do to get the correct value.