[Edit with Affinity Photo via Apple Photos]

Thanks MEB. That seems to work better. Though, for many files I run across this error (see attached)

[Edit with Affinity Photo via Apple Photos]

When I open a photo in Apple Photos, choose "Edit with >", "Affinity Photo", edit the photo in Affinity Photo and then save (File > Save) I would expect Apple Photos to show the updated photo. Instead, it seems the change is completely lost? Closing the document in Affinity Photo doesn't change anything either.

 

Am I doing something wrong? Is there a different way I should be doing this?