I still have a ~/.update-manager-core directory, on a system upgraded through several Ubuntu versions. It contains 2 files, "meta-release" and "meta-release-development". The files were last modified in 2010, suggesting they are no longer used (presumably the migration failed to remove the obsolete config).
I still have a ~/.update- manager- core directory, on a system upgraded through several Ubuntu versions. It contains 2 files, "meta-release" and "meta-release- development" . The files were last modified in 2010, suggesting they are no longer used (presumably the migration failed to remove the obsolete config).