The Group Data workspace displays the information from the Group Data Collection workspace as it was when the snapshot was created. It holds the identifying information for the Country-by-Country report — the MNE group name, the reporting fiscal year, the ultimate parent entity, the reporting role, and the receiving and transmitting countries — which is a required part of the report but is not reported as a separate table. Even though the group data has no direct effect on the calculations, you need to create a new snapshot after making changes to the Group Data Collection.