Problem With Page Break In A Data Region Who's Visibility Is Conditional

I have a report which produces invoices.
These invoices are more complex than your average ones.

The invoice is for one customer but many orders. Within the invoice, orders are grouped together by their delivery address which can be different for each order within the invoice. I throw a page for each seperate delivery account and sub-total by delivery account too. All this works fine and page breaks are all OK. However I also need a summary page at the end of the invoice showing 1 line per delivery account andf the sub-total for it, then I show a grand total.

To achieve this, I used a list control, grouping on Invoice number. within it I placed 2 tables. 1 is the main Invoice table, the 2nd is the summary table. I have a page break on a group in table 1 that controls the split on delivery account. I have a page breaks on table 2. Again this all works fine and paging is perfect.

Here's the crunch though! If the invoice only contains one delivery account, I need to suppress the summary table. This I can do BUT I still get the page throw for it, effectively giving blank pages. The page break is triggered regardless of whether the containing control is visible or not.

I'm pretty accomplished with RS and I've tried all sorts of tricks and hacks to get round it but it seems a page break is added regardless of whether the control triggering it is visible or not!

I've tried rectangles both with the table in it and outside. And with the page break on the rectangle and when that didn't work , on the table inside it.

Any one else have any ideas on this.

Cheers
Chris