[vader1]

They do: https://support.garmin.com/en-US/?faq=HfJ4xPchdD3cmZ2qtDpOR8...

But it currently only imports coarse data, e.g. your average heartrate on a given day. Not the granular minute-by-minute information.

Sleep statistics currently aren't imported at all.

[cbHXBY1D]

I sold my Fitbit for a Garmin in the last month and the importer really didn't do much. Fitbit only gives 31 days of data.