Report Not Populating all Cells from a Sheet

I've built two separate reports from multiple sheets. Each contains one common sheet. One report populates all the cells in the row, and the other populates some of the cells in the row. There are several cells in the row that are blank?

Has anyone had that problem? Please let me know if you've had this circumstance, if you were able to resolve the issue, and what were the steps to correct.

Thanks for your help!