Example scenario
To setup BE BODs in EC you need to import more than 100 agreements in Partner Admin. A huge number of agreements in this group requires an update on Company Number (CONO) specific to its target environment. After importing agreements groups, you would normally edit individual agreements. You can use agreement override parametized import/export feature to update the target values by agreement groups.
An empty xml file is in the agreement .agr file package. Rename the .agr file to .zip file, then open the xml template file.