This conversation has been merged. Please reference the main conversation: Lightroom: Linked Smart Object Support for Lightroom | Better Photoshop integration/synchronisation
Please add a File > Open In > Photoshop as Placed File
This would allow the DNG to be managed by Lightroom and have the changes picked up by Photoshop. This would be really useful for lots of workflows where a DNG used in a comp or template might be iterated on once the comp had been started. Breaking the link to Lightroom by opening in PS as a smart object doesn't make any sense in such a case.