Desecrate temp. bonus only works for monster Zombie, not template zombie
most of the Undead (monster or template) seem to work fine with the Temp. Bonus Descrate (all 4 flavours).
The exception is, sadly, the one I want to use today!
"Zombie (Human)" from the race list is fine with Desecrate, but any other race with added Zombie Template ignores the Desecrate Temp. bonus.
Pathfinder core ruleset