How do I update an opened image without closing and re-opening?

[borissimo86]

Let's say I'm working on a TIFF or JPEG image that came from an external converter/editor (not ACR/Lightroom). I open it in Photoshop CC, I add some adjustment layers, and then decide that I'm not happy with the original image because maybe the white balance is wrong, I want to tone down highlights or make some other changes, so I go back to the source converter/editor, make the changes and save the file, overwriting the original. Now I want to keep the layered adjustments that I made in Photoshop and only "refresh" the background image so that the updated one is displayed. Is there a way of doing that without opening the updated image separately and then copy-pasting? Is it maybe possible using a smart layer?

[D Fosse]

Open as Smart Object from ACR/Lightroom works that way. To get that kind of integration between Photoshop and another non-Adobe raw converter, it would probably have to be as a Photoshop plugin.