Printing sub-report footers at the bottom of a page?

Hello,

We have been designing a Payment Voucher report, which needs to have multiple copies (with slight variations) when printing. Currently, we are doing this by way of subreports - the main report passes the parameters back to identical subreports, and sectional page breaks split the copies into 3 pages.

This has worked well, with the exception that footers in the subreports (which have Print at Bottom enabled and A4 paper size) don’t print at the bottom of their respective pages, probably due to how subreport nesting works.  

We have tried manually setting the height of the subreport to A4 height in the main report, but this doesn’t seem to work either.

Any ideas?