I'd imagine then it's when you're doing the copy/new from clipboard stage.
I don't have elements, nor have I ever used, what does that achieve?
When you copy the image and paste it into a new canvas, it won't carry the info with it. Think of EXIF as like the back end of the file and the image as the front. When you copy and paste you only copy the bit you can see (the front) and the back, which has the EXIF, gets left behind.