I still haven't found a satisfactory answer on what 'Cutoff UNIT Regionalized' version includes. The link doesn't share much except suggesting to refer to the database implementation document.
I have been trying to understand by calculating same process in both versions of database. GWP numbers are same. There is difference in Acidification Potential numbers. Trying to understand Process Impact Contribution - I am looking at more thant 3000 processes with minor differences in numbers leading to Total AP lower in UPR Regionalized as compared to UPR.