Not sure what kind of satisfactory documents if transfer from own overseas account to own domestic account?

You mean withdraw in Malaysia by using overseas Debit Card? This you may need to withdraw multiple time if the amount is substantial as there is daily limit restriction.

Not sure how this work. I don't think banks in PRC support this though.

Thanks for the link. This only applies to money sending from MY to overseas. I'm looking at money from overseas sending back to MY if without document support.

PRC banks don't have

Thanks. Will explore later.

Any reason given?