On the mainframe green screen, it is possible to import data fields from a reporting mode program in the data area editor - a very useful feature when upgrading reporting mode programs to structured mode or at least structured data mode.
See tech forums https://tech.forums.softwareag.com/t/dynamic-variables-in-strict-report-mode/265198
Green screen can import data elements from a reporting mode program, but NaturalONE Advanced Edit > Import Data Fields cannot.