Package Servers are not receiving existing patch packages for distribution to client machines because the configuration has been changed after the patch software update policy has been created.
Patch Management has initially been configured to distribute to Package Servers individually:
Settings > Software > Patch Management > Microsoft Settings > Microsoft > Policy and Package Settings
Allow Package Server distribution > Package Servers individually
Bulletins have been staged and tasks have been created. Then changed the Package Server distribution configuration.
This change is not reflected on existing packages.
Note: See KB https://kb.altiris.com/article.asp?article=48255&p=1 for additional information.