I think this should work just fine. They don't show the code for the package, but I'm sure it looks for SW Delivery packages that have a ResourceTypeGuid of "Patch Management Update Package" (not the right ResourceType name, but I don't have access to an NS currently), and that GUID hasn't changed AFAIK. Plus I think Patch 6.2 came out around or before this article was originally created.
Have you tried "Recreate packages" after first checking the "Allow Package Server Distribution" checked? This might fix it too.
Just in case, I would backup your Altiris DB before running it just in case anything unexpected happens.