Was touching up a Zoo Tycoon 2 mod but when I went to duplicate the coordinate set for the Decal 0 texture the duplicated UV corrupted and became unworkable.
Had to use Nifskope 1.1.3 to do it instead.

Windows 10
Nifskope version 2.0 Dev 8
https://github.com/hexabits/nifskope/assets/43920874/506705c9-8767-4015-a050-b67df37f4640