How to maintain order in a grid with three row types.

I've probably just been looking at this too long, but would like some input
please. I have a DataGridView that presents reporting bands. Each band may
or may not have a header or a footer, so I use a rowType var that guarantees
the header-band detail-footer will always remain in sequence, but I now
worry about inserts and deletes, where any one of the three, or all three,
may be deleted. Insertions are also causing a brain freeze today.