If you have created a report in [menu] File > Generate Report (and saved it to the model!) the headers wouldn’t change that much. If you insert a table that was generated by that report in one of your scrapbooks, with the different CSV Reference Options (eg, the Row-Columns) for the header, copy that and set them to following rows, you can drag them in your current LayOut document fairly easy. Even set up different styles for the headers.
(you could do this only for the current document, but you might get other documents that need long lists, too, so a scrapbook is ideal for that)
see this post:
Once inserted from the scrapbook, you need to relink it to the current report and all tables that refer to the original from the scrapbook are replaced. (Yeay, component-like-functionality, except they have different Cell ranges)
