The migration contract currently has around 17,000 STBZ unclaimed from users who migrated from ETH chain to Arbitrum chain. This represents about 8% of the total STBZ supply. After 90 days from contract creation, governance has the ability to remove the unclaimed STBZ in case of such a situation.
This is the contract: https://arbiscan.io/address/0x56d8d79d0342E56e0a87E6932d7833a992A3b91F
Governance can remove the STBZ to allocate to the buyback bank to store for future emissions for all users who participate in the protocol, governance can burn the STBZ and reduce the total supply, or governance can just leave it alone.
What should governance do with the unclaimed funds? Vote with your STBZ. Voting will last for about 9 days.