What are the Oracle Dataguard Implications of Migrating to a PDB? If I have an OLTP database with two physical standby instances (one remote) what are the implications of migrating the primary DB to being an Oracle 12c PDB? i.e. Does the process of migrating to being a PDB send a sensible EOR record via Dataguard that will leave the data files on the physical standbys in a state that can be picked up from or would it require a complete backup of the whole CDB with the new PDB plugged in on the primary to be restored to each standby before Dataguard could be resumed?

The Primary DB would already be a 12c non PDB.
The notes about this in Oracle 12.1.0.2 state that it is not required to move/copy the files from the primary during the plugin. The note also states that in this release the copy of the standby files of the source can be postponed using the standbys=none clause. This makes it possible to plugin a large primary database in a primary container database and perform redo apply/recovery later, when all files are copied into to correct file structure.

seeHandling of Standby Databases during plugin note 1576755.1

My conclusion is that in 12.1.0.2 the standby files need to be copied but this is not perse during the plugin of the primary database so it does not cause any extra downtime.

Still I would like to see this tested before I would do this on production.