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@willie2372 They don't sync to each other directly, but you may want to sync your own data through a third-party app. @CasHoefman recommended: SyncMetrics to sync Nike+ activities with Fitbit, including weight. Besides Nike+ it also help you synchronize and analyze fitness and health data from Cycling Analytics, FatSecret, Garmin, iHealth, MapMyFitness, Nike+, RunKeeper, Strava and Withings.
Perhaps you all can sync there and then you'll see the data. Let me know if you have another queston, and happy stepping! 
Best Answer
Community Moderators ensure that conversations are friendly, factual, and on-topic. We're here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
@willie2372 They don't sync to each other directly, but you may want to sync your own data through a third-party app. @CasHoefman recommended: SyncMetrics to sync Nike+ activities with Fitbit, including weight. Besides Nike+ it also help you synchronize and analyze fitness and health data from Cycling Analytics, FatSecret, Garmin, iHealth, MapMyFitness, Nike+, RunKeeper, Strava and Withings.
Perhaps you all can sync there and then you'll see the data. Let me know if you have another queston, and happy stepping! 
Best Answer