So in order to withdrawSurplus before the end of the vesting period, you need need to unstake the quasi-totality of your GRT so you can show to the TokenLock contract that you indeed have a surplus. That implies that to withdraw your surplus, you have to forego 28 days of revenues.
TokenLock contract should calculate surplus = Max ( currentBalance + staking_balance - remaining_vested_amount, 0)
If I interpret the wording from the notion guide (https://www.notion.so/Graph-Network-Token-Lock-Contract-Guide-30992eea5f4b47c8b4c6ff7a9bc56a41) correctly, in order to be able to withdraw your gains from indexing rewards, rebate rewards or query rewards from the Token Lock contract you need to have a surplus in the contract itself.
meaning:
surplus = Max(currentBalance + remaining_vested_amount, 0)So in order to withdrawSurplus before the end of the vesting period, you need need to unstake the quasi-totality of your GRT so you can show to the TokenLock contract that you indeed have a surplus. That implies that to withdraw your surplus, you have to forego 28 days of revenues.
TokenLock contract should calculate
surplus = Max ( currentBalance + staking_balance - remaining_vested_amount, 0)