Thanks Allan, this will help a lot with the workflow.
I've tried both opening a photo from the Media Browser and via Apple Photo and this new extension.
What's happening is this:
After editing the photo opened via the Media Browser and saving it, there's an issue in the Photos thumbnail http://i.imgur.com/3uTXlsU.png
When I hit the Edit function in Photos, the changes (both via the Develop persona and a few Adjustment Layers) are lost http://i.imgur.com/75iFvCG.png
Once it opens in Affinity Photo (via the "External Editor" extension), none of my previous changes are saved http://i.imgur.com/Dl3fsUY.png
One other thing, when I open my photos via the External Editor extension, I can't save them back in Apple Photos, since it only offers me the "Save As" option (even if I use CTRL+S and not SHIFT+CTRL+S). http://i.imgur.com/nNVKlRP.png
Not sure if it's due to something I did wring or a known bug or something, let me know if it's not posted in the right place.
Xav
