If it is a fund purchased through bank online banking, all information will be automatically transferred out after the card is changed, so don't worry. If you sell directly through the fund company's website, it will be troublesome. You have to go to the bank to issue a certificate to prove that the old and new cards are yours, and then you have to inform the fund company. There is a very troublesome procedure, and every company is different. You can go to the company website to have a look.
If there is a fixed investment deduction, see if there is any during the loss reporting period. Being frozen during the loss reporting period will lead to unsuccessful deduction.
That's my opinion. It's really bad. You can call the service hotline of the bank and ask them to help you.