We are in a similar situation, we have previously configured a policy with "Allow recovery information to be stored in plain text" enabled. We are now trying to modify that setting to prevent plain text, but the option is Enabled/Greyed Out.
I am assuming from the original reply "Did you already create a policy previously" that this is a known issue. I have not had much luck tracking down an answer to this.
Could you please explain here - or at least identify where or in which video this information is covered?
Thank you