Yes, if you have used the option to make these updates visible in the wsus console, and if you can see it in the Wsus Console of the upstream server, so you should be able to saw it on downstream servers.
If you use WPP to connect to downstream servers, do you see your updates ?
Do you have any synchronization errors between upstream and downstream servers ?
If you use WPP to connect to downstream servers, do you see your updates ?
Do you have any synchronization errors between upstream and downstream servers ?