Satellite 6.2 Airgap Installation

I have been trying to decipher the documentation on airgapped Satellite, with little success.

I have a Satellite Server (RHEL 7, Satellite 6.2) connected to the Internet, and another Satellite Server (RHEL 7, Satellite 6.2) on the disconnected network.

Following the instructions in Appendix C of the Content Management Guide, I have a drive with 110GB of exported content from the connected server, but the next steps are less than clear.

I attempt to enable a repository on the disconnected server, but the error message complains "/content/dist/rhel/server/7/7.3/x86_64/os does not seem to be a valid repository. Please try refreshing your manifest"

I have imported the manifest from the downstream server, but none of the repositories can be enabled through the web interface.

Please help.