Sometimes your source folder in Finder and your gallery in Narrative are out of sync, there is now a menu item under the blue folder icon titled Refresh Gallery
by clicking this Narrative will do a non-destructive sync of the folder.
What this means is that:
- Photos that are in Finder but are not your gallery will be added.
- Photos that are in your gallery but have been removed from Finder will be removed from your gallery, if and only if they are not in your current layout.