Elite Monsters and Elite Bosses

Is it just me, or does the level restriction on spawning Elites apply to 150+? I was grinding at SDH on my 209 I/L for about an hour for the butterfly event and didn't see a single one.

And if that's the case, then anyone over 218? can't get their own Elite Mobs/Bosses.

I've been able to spawn elite mobs/bosses at HoH/WG on my 222 Marksman since the release of the patch.
The "Advanced Knight" mobs still count as normal mobs, I guess.