In the hope of being helpful, aberrations such as cells or columns not displaying when disposing of a Jasper report to a spreadsheet invariably result from having overlapping fields or fields that accidentally span a section of the report. This is a deficiency in the iReport designer in that it does not bring these matters to the attention of the designer and determining the actual position of fields relative to another can be tricky. It would be better if the properties window of a field not only revealed the left hand side position and width of field in pixels but also the right hand side of the field. There most probably are tricks to doing this but they are just not obvious to new-comers.
