Days Gone Remastered Upgrade bug?

Hi there! I was hoping I might find some help here. I saw the remastered version was on sale on ps5 and I recently started another NG+ on the original.

When I jumped back into my save I noticed that nitrous wasn’t installed and the drifter crossbow is nowhere to be found.

The most annoying thing is that all my bike upgrades are visible but don’t seem to work? Gas is gone driving from Copeland to Tucker and the speed of the thing is just horrendous.

Is there something wrong? I enjoy the graphical and sound upgrades a lot but it plays better on the original version?

Hope I can find some help here if anyone had the same problem.