GeodatabaseSyncTask Creates Two Replicas in ArcGIS Enterprise

[JoeHershman]

I have a tool for taking data offline which uses the GeodatabaseSyncTask which uses the Mobile API

What I notice is that when I look at ArcGIS Enterprise at the /replica (https://serverName.domain.loc/server/rest/services/Mobilelayers/OfflineNetwork/FeatureServer/replica... endpoint on the feature service there are two replicas created 

When I look at the .geodatabase generated it seems that the file always points to the second one.  I am using branch versioning for the first time, is this expected behavior with branch versioned data?  With standard archive data only a single replica was ever created (same tool, different ArcGIS Enterprise)