@lproven With SUSE's snapshots we either need to go from A2' back to A1 (if we haven't deleted it already) and then update to A2, or we uninstall the package using the package manager. But depending on the package manager installing and then uninstalling a package might not be guaranteed to lead to the same result as doing nothing. So by uninstalling the package we might actually create a new state A2'' != A2.