Saved DNG files from Camera Raw version (16.1),Photoshop 2024, differ from PS screen versions, why?

Excuse what I’m sure is my ineptitude and stupidity but I’m new to PS 2024 and the new Camera Raw version (16.1).

I’ve been working on landscapes and this is my workflow:

- I often use the AI De-noise on the opened NEF file in CR 16.1 and save it as a new DNG file

- Opening that new DNG file I remove spots; then, choosing ‘Edit’ I make adjustments under the HDR tab e.g I tweak the ‘Light’ settings; then I go over to ‘Presets- in particular I've been experimenting with things like ‘Adaptive Sky’

Now:

• why when I click on Window can I not view the History of my edits before saving? 
• But more importantly why when I save the image out as an Enhanced-NR.dng are the edits and preset filters I’ve just made not applied to the saved file? It’s as if those edits are simply shown on screen but not actually applied, what am I doing wrong?

Many thanks