I don’t know what you are implying is not true.
As pointed out above, there are several ways to copy masks from one image to another.
Try these steps:
- Open in Camera Raw the image from which you wish to copy masks while simultaneously opening all the images you wish to copy the masks to. You can open as many images as you like, memory permitting.
- In the filmstrip, select the image from which you wish to copy the masks then in the dropdown menu (point at this image and click on the three dots) select “Copy Selected Edit Settings” (Note the keyboard shortcut if you intend to use this lots.)
- In the "Copy Edit Settings" dialogue which opens, select just “Masking” (or any other settings you may wish to copy as well.) Click “Copy”
- Now select all the images you wish to copy to. In the dropdown menu again, choose “Paste Edit Settings” (Note keyboard shortcut again)
That’s it!