As a Protestant Christian I find this entire exercise utterly befuddling. Why are Catholics digging up his grave?
I **respectfully** ask, “Why are you doing this?”
Someone being beatified is typically exhumed (if their gravesite is known): (a) to determine whether they've been miraculously preserved; (b) to recover relics; and (c) to move their body to a more accessible or impressive resting place.
It's pretty much standard procedure.