Hello Jon,

Project groups are applied to the particular project and the folders beneath it, which explains why you're seeing the group show up in core.Users for the subfolders. I'm not sure if there is a simple way to collect the data you're after in a JSON like format. I can check with the devs to see if they have any ideas. I poked around in the R API and found that labkey.getFolder can be used to get the permission level of the current user for the folder it's called on, but that doesn't give you all of the users that have access. Would you mind sharing your R script, so I can take a look?

1. Is there a particular type of access you are trying to locate (Ex: Reader, Editor)

Thanks,
Chet