Maria,
Thanks for the "thanks".
For CASE, I would just make sure everything lines up (ie. you have the right objects set up for storing HCM P&F info. There are also some OSS notes you might can check (not sure of your release level). Past that, I would check your security too. If you don't have correct authorization, you can't read/write to CASE either.
As for the "sample" forms....keep in mind they are NOT meant for production use. Most all are just examples of things to do either in configuration, backend services and/or forms. Many of them don't even work completely. (haha) Make sure your client is aware of that....and also aware that with just a little work, you can build them processes to meet their needs. 
Let me know what you find.
Chris