Background image in report PDF export problem

Hi,

I have created a BIRT report. I am using a single background image for it. The header of the report uses a part of the background image using image position (center-top). The rows of the report use another part of the image (center-bottom). The report renders perfectly in the web viewer. But when I export the image to PDF, the background image positioning is messed up.

Is this a known issue or is there a way to position the image differently to make it work in PDF. Worst case, if I can not get it to work, I do not mind removing the background image when report is exported to PDF. Is there a way to do that?

Thanks,

Aparna