IMO there may be another solution for this.
You can set the group header to repeat per page
Go into the group expert
select the group you want to repeat
select options button
select the Options tab
check the 'Repeat group Header on Each Page'
That being said, I am not sure how it will react to trying to repeat a group header section that is larger than the size of a single page.
You may need to break the group header into sections and control them with suppression criteria that would work with the overall setting
inrepeatedgroupheader returns a T/F