Rdlc subt report, with group, if subreport, on new page, alwasy takes last row and puts it there too

Question

So I have an RDLC, with a group and 2 subreports

there are two details lines, for each "row" of info, then a group with a "subtotals for this region" subreport.

then a report footer with a "all regions subreport"

If the data in paired rows gets long enough that the "Subtotals for region" subreport goes to a new page, it take the last line, half of a details pair and moves it to the next page.

<d1>
<d2>
<d1>
new page
<d2> 
<region sub totals>

Is there a way to force the report viewer to keep the details rows for a single unit of information together?

You can do it in crystal.

Thanks,

Eric-