NPC Spawn Issue: Tserrina Syl'Tor in ToFS

[Zentile]

As recently as a few weeks ago, Tserrina Syl'Tor respawn rate, appearance rate and loot table were very different. I can't find any evidence on Allakazams that this is supposed to have changed.

Old Rates (from 100+ hours in ToFS)
Bats Respawn: every 20 minutes like the rest of ToFS
Tserrina Appearance Rate: 1 in every ~6 bats
Robe Drop: 1 in every ~6 kills

New Rates (from this past week)
Bats Respawn: every 60 minutes
Tserrina Appearance Rate: 1 in every ~12 bats
Robe Drop: 0 in past 23 kills

Would you mind having a look to see if this was an unintended consequence of recent server changes?

Thanks,

Zentile