Can you please specify the Advanced Parameters you are configuring on section A. Are you displaying the "pzInsKey" in text input configured in Section A. Did you check "Pass current parameter page" check wherever required in section B. Are you embedding section A in section B. Please provide complete use configuration to investigate further.
I think? this is working as designed. It appears as though the parameters are being passed fine. Your issue is that it does not lookup property references within the passed parameters. I don't know if property lookups are supported here on this feature.
Need an SME or product owner to confirm or otherwise.
That is a different question. In fact, in your example, you are doing just that, and quite successfully.
The issue that you are facing, is you are trying to perform a property lookup within your passed param. I do not see any smart prompt or autocomplete arrows on that form, so I would infer such a feature is not supported.
But to be certain of that statement, I will defer to SMEs and/or product owners in this arena.