Detail data for all trackers is saved for 7 days then another 23 days of daily totals. There is only so much room for exercises and if to many or done, they user may lose some.
Yes it is possible that data may not be reset when setting up the tracker to a new account. However, fitbit is suppose to reset this data when setting up to a new account. Since the tracker was removed, you will be setting up the tracker as if it was new to you.
It is much safer to use the add device, without removing the tracker, and chose the option to replace.
This does two things.
- Fitbit knows it is the same tracker and will not reset data.
- If the setup fails, usually does, the tracker will not be removed from the account.
I say usually does, because telling fitbit that you are retireing a tracker, this is what removing does, will not fix a communication problem between phone and tracker.
One of the most common complaints with a non syncing device is, I removed the tracker and now it won't setup, this is because the user hasn't fixed the sync issue.
