CID 4522 is one of the patterns that do not show an unfold profile in the attached PDF. I assume that it cannot be unfolded, but I am not a sheet metal guy. I have limited knowledge of unfolding patterns, but if I were you, then I would be trying to replace all those 4522 couplings with ones built on CID 1193 or other similar rectangular straight. There are tons of straight rectangular patterns with development profiles to choose from in that PDF.