I created complete library and complete+incremental CV version exports including a repository with GPG key. It was possible to import all of them.
VERIFIED with Satellite 6.10.7 SNAP1 @ RHEL7.9
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (Satellite 6.10.7 Async Bug Fix Update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2022:5516