Numbers Spreadsheets Re-Sizing Page in ios7

I use numbers both as an app and as an application on my iPad Mini and on my Mac Book Pro.

I use the same template on each device that I have created for invoicing.

Prior to my ios7 update I could, on the iPad/app save the spreadsheet sheet as a PDF to Dropbox and, when I opened it from within Dropbox it had remained the correct size - A4.

However, now when I open the PDF the sheet has been resized so that it takes up to 4 pages!

It doesn't seem to be limited to the invoices I have custom made - I just used a ready made template from with iWork on my mac, saved it to the cloud, and, from my iPad exported as a PDF to dropbox - the sheet now spreads over 3 PDF pages.

From on my mac if I export a saved A4 spreadsheet to PDF the size of the sheet remains A4.

All help gratefully received!

Thanks.