[RayoVac]

click Fix by reference

He already said that he got many "unknowns" in this case 
The only way is to wait for a new version with 21_11 support 

Exactly,

I have tried completely deleting Esys and Psdzdata, reinstalling trying Esys 3.35.3 and 3.63.2, I have Psdzdata 4.34.25.

In Esys I have tried using both the 11/21 and 3/22.
I have tried "Fix by Reference" using the 003_004 and older (just to rule things out).  

Yes, the CAFD will load after Fixing, but I have a ton of Unknown Parameters and specifically some on what I am trying to change where I would not even know the exact value to enter.

For example I am trying to finish re-setup of aSLA (after the dealership updated me to 11/21, I have a G05). One of the first parameters that are bonked is C_SLA_Streckenregelung_vorhanden and I need to set it to NR_002_vorhanden_SLA_entkoppelt so I am not really even sure if I could figure out how to enter a correct value, or if I would want to code that module with all those Unknown Parameters in there.