I "Select All" copy the image and then "Paste into New Image".
The pixel size is the same but the ppi changes to 96 which causes the print size to change.
Is this normal behaviour? (It's OK if I remember it's does it, otherwise I have issues), Or maybe there's a setting or something somewhere I need to tweak?
(sorry, I've seen what I did in the title but not how to edit it).