posted a question that got me thinking and to be honest as a long time Mac user I was stumped. Many of us shoot in RAW and Jpg for easy of use but the ability to really push the image if needed in post. She was importing from the camera into the new Photos App and noticed she could only see the Jpg and not the RAW. There was also a small J tag on the bottom left corner. Now in most Image Management programs this is a visual sign that there is the Jpg and the RAW files Stacked together. I still use Aperture which gives me the option to select if I want RAW or Jpg as the master or have them separate on import. Appears you do not have that level of control with Photos App. And it is not intuitive either to work out how to change it. Right now there is no way to select which one you want as master on import, you are stuck with Jpg. But after import you can swap them.
I did a series of screen captures to demonstrate how to do it. The images will still be stacked but at least the RAW will be the master. If you would like to have them separated you would need to drag them separately from the SD card into Photos App. Not the simplest method at the moment. Might help some people, might be a waste of a read but at least I learnt something new today as well. Just reinforced my decision to remain with Aperture.