After the stock is sold, the funds can only be transferred out on the second trading day. The sponsor does not need to change or terminate the original contract, but only needs to directly transfer the basic assets to SPV through certain legal procedures, that is, the transaction does not involve the original debtor. The corresponding concept in civil law is assignment of creditor's rights.
As long as the original obligee and the new obligee reach a transfer agreement, the transfer will take effect between the two parties, without the consent or notice of the debtor or other further actions. However, in order to constitute an effective assignment, that is, to have effect on the debtor, it is not enough for the seller to indicate the meaning of "assignment" in the agreement, and he must also send a notice of assignment to the debtor.