Upgrade of the SCVMM data is a one-way process. It is recommended that you take a back-up of the project collection database ...

Upgrade of the SCVMM data is a one-way process. It is recommended that you take a back-up of the project collection database before running this command. For information on how various artifacts are upgraded during this procedure, see http://go.microsoft.com/fwlink/?LinkId=229106.