On May 10, 2021, in Cargo Systems Messaging Service (CSMS) #47740180, U.S. Customs and Border Protection (CBP) published a guide for updating any reports in the Automated Commercial Environment (ACE) that are in the Trade Export universe to redirect to the new Trade Export universe. The original Trade Export universe will be retired at a future date that has yet to be defined.
CBP also noted that the guide can be used to update reports to redirect to any upgraded universe.
CSMS #47740180 includes the guide and can be found here:
https://content.govdelivery.com/bulletins/gd/USDHSCBP-2d87514?wgt_ref=USDHSCBP_WIDGET_2