Here's something I find baffling.
The differences between 1.jpg and 2.jpg is that the latter is stripped of EXIF data and the file size is obviously smaller.
Useful to know if you want to keep the EXIF data with the .jpg (or not). Is there a simple explanation for this?
As I read your bullet list, 1.jpg is effectively created from the original jpg (using its EXIF data) despite the fact that you have saved it as a cpt whereas 2.jpg is created from the cpt (which, of course, has no EXIF data).
"should" is the operative word but see... http://community.coreldraw.com/talk/coreldraw_graphics_suite_x7/f/811/t/45267
...which you contributed to, by the way ;)
let me reveal my ignorance, after an image is opened and edited what part of that data is relevant?
David Milisock said: let me reveal my ignorance, after an image is opened and edited what part of that data is relevant?
All of it!
It should be your choice as to what to keep/discard, surely? CPT shouldn't be a lossy format but I can understand why it is. Even so, it has niggles that could be resolved for some of us - and very simply too.