AUTH0_PRESERVE_KEYWORDS is not preserving "allowed_logout_urls"

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Using the Deploy CLI (auth0-deploy-cli@7.18.0), we have an existing tenant.json. In our config.json we have

"AUTH0_PRESERVE_KEYWORDS": true,
"AUTH0_KEYWORD_REPLACE_MAPPINGS": {
    "ALLOWED_LOGOUT_URLS": ["https://some-domain.com"],
    "FRIENDLY_NAME": "Friendly Tenant Name"
  },

When exporting, this entry is being removed from the tenant.json:
"allowed_logout_urls": "@@ALLOWED_LOGOUT_URLS@@",

Other keys are preserved as expected:
"friendly_name": "##FRIENDLY_NAME##",

is ‘allowed_logout_urls’ no longer a valid key? It is used in the keyword replacement example in the docs: Keyword Replacement