ASPIRINGARTIST'S PROFILE

Okay this is a short question that I am unable to solve.
Can ststus buffs/debuffs be stacked and not be cured by unrelated items?
The best way for me to explain this is an example so here goes...
Battle Senario:
Battle begins: Hero Status Normal
Monster attacks with magic: Pain
Hero is afflicted with Poison, Blind, and Silence.
Hero uses Echo Herbs (an item that cures Silence)
.... now what is suppose to happen is that Poison, Blind remain but...
the status returns to normal.
I've tried making the priority 15 to 20 points different or the same value like 100
but nothing helps.

Any ideas?
Before any nay sayers get started... let me tell you stacking buff/debuffs can make battle more interesting, challanging to the player, and can give the player a since of satifaction when they win the fight.