[iReport] Exported Excel Report But Has Missing Data

Problem
I am using iReport 5.5 in my project, the requirement is to use iReport to design report template, and export the report with pdf and xls format.
The problem is as I export pdf format, I can see complete data

but as I export xls format, the xls report has lost data in page header band.

Solution
The missing data problem results from the overlapping elements (even 1 pixel).

After I fixed the overlapping problems (add one more space between elements)

I can see complete data in xls report.