I am currently engaged in the analysis of a COPA FI Recon workspace report. The report structure comprises FIPA line items in rows and three columns featuring formula-calculated fields. When attempting to drill down into FI document numbers with Null FIPA line items, I observe that only a some of the documents are visible, while others are not. However, introducing an independent key figure to the columns results in all FI documents being displayed in the report. I am struggling to identify the root cause behind this discrepancy in the report behavior. Any insights into this issue would be greatly appreciated.