A group header band has a KeepHeaderGroupTogether property. When this property is set to false, you can display the group header on one page and the group's data on another page. That is, the data is separated from its header. The image below shows that I was on a page with a header and the data moved to another page.

If the property is set to true, the group header will be displayed with at least one row of groups. The following illustration shows how groups are printed when the KeepHeaderGroupTogether property is set to true.

By default, the KeepHeaderGroupTogether property is set to true.