The Save current scenario tool lets you save scenarios (Save Scenario) and batch run them again in the batch runner tool (InaSAFE Batch Runner) in one go:
This is the tool you need to prepare/save scenarios for the InaSAFE Batch Runner Tool. It lets you save the current visible scenario in QGIS to a .txt file. Once saved you can reopen this file as a scenario again in Batch runner and recalculate it. A more detailed description of the batch runner is available in Batch Runner