When using the Advanced Reporting Add-In you will see that there are three data Types, "Hist", "Proj" and "Actuals"
When using the PlanGuru Advanced Reporting Add-In regardless of which "Analysis Type" value you selected in PlanGuru, "Proj" will always refer to your forward looking periods.
Forward looking period in PlanGuru > Type Value in the Advanced Reporting Add-In
Budgeted > Proj
Projected > Proj
Proforma > Proj
Planned > Proj