1. If you cancel the prepayment registration in the trade credit system, the foreign exchange bureau will transfer the negative value to the general trade, which is to avoid the repeated settlement of foreign exchange by enterprises.

2. After your customs declaration is cleared, the customs quota is transmitted to the electronic port, but it has been changed, and the customs will immediately transmit the negative value to the port.

You can judge according to your specific situation. If you are really unclear, you can also consult the customer service staff at the electronic port.