As you noticed, we made some big changes to the NetApp Knowledge Base site. As such, a large number of articles weren't able to be migrated automatically.
Per the article linked above, there is a KB Request Form-- I've taken care of submitting that on your behalf, based on your post here. The team will review and if they're able, will get this content migrated over. We can work with the docs team to update those links as well.
I'll let you know when this work is completed. They're usually pretty quick.
Thanks for your understanding,
Community Manager \\ NetApp