Problem with subreport - Ok in Studio, less rows on Server

[sjmon3]

Hi!

i'm having some issues with a report with subreport. I've the main report that have two subreport divided in two pages from a page break.

All is working fine in jasper studio, the reports works lika a charm, but when published to Jasper Report Server it still works but the first subreport shows less rows (something like 250 instead of 1000). 

I don't know what is going wrong. 

Someone else have had the same problem as mine? 

Thanks!