This script let you change any properties of multiple ChaosScatter at once.
Update 0.2: the loaded maps are now loaded in raw color profile, a new additional tool that can convert forestPack to ChaosScatter (you need to have ForestPack Lite or Pro installed), density maps loading was missing.
Update 0.3: A button to Convert all selected Chaos Scatter to geometry instances has been added. New buttons in additional tools tab has also been added, you can now add some distribution objects to existing ChaosScatter, and you can select either Scattered Objects or distribution objects.