Once the CIU is authorised, prior approval must be obtained from the CBB for any subsequent material changes to the prospectus. An updated copy of the prospectus must be made available to CBB within 30 calendar days of the revision being agreed, and CIU participants must be notified of the changes at least 30 calendar days before they take effect, given that a window for redemption is made available to CIU participants within this timeframe.