The "Archive Budget" utility in PlanGuru allows a user to lock down projections made for the entire fiscal year in the budget tab, while allowing the user to make separate ongoing changes in the forecast tab.
When you are initially setting up a scenario in PlanGuru, you will notice that your budget and forecast data are both entered in the same tab: the "Forecast/Budget' tab.
This is because at the beginning of the fiscal year, your budget and forecast data will be the same. However, once you start receiving actual data for the fiscal year, you will need to archive your budget in order to lock down that budgeted data.
You can begin this process by clicking on "Utilities" > "Archive Budget" on the left side of PlanGuru.
Doing this will lock down the data you entered initially in the "Forecast/Budget" tab by placing it in a now separate "Budget" tab.
This allows the user the ability to maintain a rolling forecast throughout the year, while also retaining the budgeted goals that were put in place at the beginning of the year.