The adjustment you are talking about means moving the position, right? Because futures contracts have an expiration date, the position must be closed before the expiration date, and near the delivery date, the recent contract is generally not the main force. Contracts, transactions and positions will be relatively small. Therefore, in order to ensure that transactions are completed, transactions are generally conducted on the main contract. When the contract you hold is not the main contract, you must consider moving the position to the main contract. The operation is to close the position first and then open the position on the main contract.