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Sorry for the very slow response. Your data is still there (nothing lost), and is displayed historically in the graphs, but the detailed data is only shown for the latest week or day. We have 2 projects on our roadmap that will make this better in the platform. The first is monthly timeframes, so you can see changes in larger chunks over months instead of weeks. The other, is the ability to look at the detail data for past weeks (and months when that is in place). I don't have a timeframe on historical yet, but we should have more clarity around our plans for that feature in January.