Cannot update usePersistentCookie in policy rule

I was trying to follow https://developer.okta.com/docs/guides/shared-sso-android-ios/ios/session-and-persistent-sso/

last step gives back existing unchanged rule, no error, just 200 OK . Is there any setting that is preventing it from being updated ?

Did you ever get this figured out? I have an open support ticket for this exact issue.