In addition to the hardcap set on GRAIL, we also implemented some deflationary mechanisms in order to reduce the total supply.
When converting xGRAIL to GRAIL, if the vesting duration isn't the maximum, the xGRAIL:GRAIL ratio will be lower than 1:1, down to a minimum of 1:0.5. All of the GRAIL excess will automatically be burned.
When deallocating xGRAIL from a Plugin, a deallocation tax is applied. It can vary between contracts, but will usually be of 0.5%.
The corresponding GRAIL amount will automatically be burned.