Current Advisory: RunKeeper: Body Composition data uploaded to RunKeeper are currently not being shown on RunKeeper. We are working with RunKeeper to resolve this issue.
With a Pro Account, you can do a Historic Sync by editing your RunKeeper source and selecting from the toolbar.
When we upload your activity to some services, we will use the map information. We have noticed that some activities recorded by RunKeeper on Apple Watch and possibly other smart watches sample GPS data and can be different than the summary shown. There is no workaround for this.