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Hi there @roadrunnr247, Usually when you took the battery out from a Zip, you are restarting the tracker and this should not caused any data lost. So if you went for a run, make sure your tracker is syncing correctly your information. Once your tracker syncs your steps from the run should be included in the overall activity count.
Keep me posted if your tracker is syncing. I'll be around and welcome aboard to our Community.
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