Using the magic wand I'm trying to replace the sky on image 1 with another sky (image 2).
I've marked the sky area I wish to replace on image 1 with Magic Wand. Using Select and Mask, I've refined the edge and saved the mask. Exit image 1 and go to image 2 (the sky replacement) - Select All, Control A and Control C. exit. Return to image 1 and choose Edit - Paste Special - Paste Into (but only Paste in Place is the only option available).
I'm frustrated by this as I achieved a successful replacement earlier but fiddled about trying to get the exact placement with Free Transform and can't repeat. (I've tried Sky Replacement but this wasn't as successful as my first attempt.)
The mask and image are not linked by default when you use paste into, so you can Transform or Move either the mask or the image. Once you are happy with both, click the empty space between them to link them so they move and scale as a unit.