Hello @Jennifer2766
I had this problem before I opted in for the early release but since then, I have managed to have my master bedroom photos showing up in Bedroom 1 again and the smaller bedroom photos showing in second position. Like you the photos were reversed.
The workaround that worked for me was to go onto my listing in host mode:
==>Click on your cover photo
==>From the photo tour, click on bedroom 1
==>Click on a photo
==>Under this photo you will see "move from Bedroom 1"
==>Choose a room or space ie. Bedroom 4
==>Put this photo and all the rest of the photos in the bedroom of your choice
==>Then do the same for the photos of the King size bedroom which are misplaced in Bedroom 4 and put them into Bedroom 1
And voilà! Hope this does the trick for you too
Joëlle