How do we analyze historical weekly forecast to actual hours in a project? Which Jaspersoft Out of the Box (OOTB) report can we use to view this analysis back to the project's inception?
The OOTB report that most closely matches this requirement is the "Resource Allocations and Assignments" report. You can review a summary of this report here.
The only caveat is that the Assignment values that it shows are total usage (ETC + Actuals). Theoretically, periods in the past should only have Actuals and periods in the future should only have ETC's. We do not have any OOTB reports that splits these metrics up.