You can use Sandboxie to run another instance of RealBand, using the drag export to import to the other instance. When saving the Sandboxed seq select recover to original folder, same if you are dragging from a Sandboxed instance to a non sandboxed.
To run an RealBand sandboxed right click on the exe and select Run Sandboxed.
https://sandboxie-plus.com/downloads/
https://github.com/sandboxie-plus/Sandboxie/releases/tag/v1.15.4

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