If an NFT is staked to a node that has already accumulated the 20 maximum tokens, and the node fee is up to date:
- You can unstake your NFT, but that will reset your node rewards to 0 (zero).
- Rewards will be claimed with the unstake transaction.
If an NFT is staked to an overdue node that has already accumulated the 20 maximum tokens:
- Unstaking the NFT on that node will not claim any rewards.
- The additional rewards are not claimable, because your node has reached the max rewards and it is overdue.