Microsoft just released the Cumulative Update 1 for Dynamics NAV 2015. With this update we no longer need to push our data upgrade through NAV 2013 R2. As the blog says:
“The cumulative update includes an upgrade toolkit for upgrading a Microsoft Dynamics NAV 2009 R2 or Microsoft Dynamics NAV 2009 SP1 database to Microsoft Dynamics NAV 2015. The upgrade toolkit includes several application objects in FOB files that simplify the upgrade process for those of you coming from Microsoft Dynamics NAV 2009 R2 or Microsoft Dynamics NAV 2009 SP1. For more information, see the attached whitepaper.”