Possible to run same script in multiple VUGen windows?

Running VUGen 11.52 with ALM. I want to debug a multiuser scenario which requires running multiple copies of the same script at the same time (with different Runtime Attributes). I can open a second VUGen window and load the script from ALM and it says the script is locked and will be in read-only mode. That is fine, but the Replay function is disabled. Is there a reason that a read-only script cannot be executed in VUGen?

I suppose I could save the script locally (or to ALM with a new name) but that seems awkward... is there a better way to do this?

Thanks,

-Mark