Now that the main phase of updating the old poisons is done, I have run scripts in an attempt to update existing cures and poisons you may have. That said, not everything gets captured in that due to various reasons. So if you have a cure/poison that was made before these updates and it's now inert, you can put in a reimbursement request for those.
If it's a poisoned weapon/item, we'll need to see the old item to update it.