Inquiry on Using Roon ARC for Offline Album Copies Without Network Access (ref#2HV838)

Yes, just download them in ARC. Note: You can ONLY download files you have locally on your server, not streaming service tracks.

I am confused by what you are puzzled about. Did you forget a “not” before “seem”? If so, why do you think it does not work? Does it fail for you and in which way?

Note that your phone needs to be online occasionally, for various checks with Roon Lab’s cloud server, but I believe this means just online time to reach the cloud, not a need to reach your own server.