My client recently upgraded to the IBM TRIRIGA 126.96.36.199 platform. After the upgrade I found that certain forms were no longer available for selection in the Report Manager. Looking at Form Builder, you can clearly see that there are nine forms on the triPeople business object:
Switching to Report Manager only five of them show as available to add to a new report.
It turns out that when more than one form with the same label exists for the same business object, only one of them will display on the report form.