I’ve used a Rollup column to aggregate data from another table. There are duplicates in the data being aggregated, as well as blanks. I use the ARRAYUNIQUE(values) to operate on the roll up data. I even created an adjacent cell with an IF statement to test for ISBLANK and it is being returned as being blank.
Once I set a filter the Rollup column to not show empty cells, empty cells are still shown. The issue is in the only DB in my account, in the Organization tab.