It should be no problem to reassign the "Up Arrow" to the "View / Scroll / ViewScrollUp" Key assignment. Use the "Up Arrow" in the shortcut field, then click assign. You'll get a message that it's already assigned and do want to change it; answer 'yes'. Now your ViewScrollUp should have the Up Arrow and "View / Camera / Up" will be unassigned.
Designer, Deluxe, (Professional, Expert, Basic), Platinum
Windows 10 Pro (1903), 64-bit