DELETE FROM custom_attribute_definitions
WHERE attribute_model = 'conversation_attribute'
  AND attribute_name IN (
      'swt_source_url',
      'swt_source_search_term',
      'swt_source_purchase_term',
      'swt_source_keyword_id',
      'swt_source_channel',
      'swt_source_realtime_location',
      'swt_source_region',
      'swt_source_ad_account_id',
      'swt_source_wakeable',
      'swt_baidu_conversation_type',
      'swt_baidu_agent_name',
      'swt_baidu_ssid'
  );

UPDATE conversations
SET
    custom_attributes = COALESCE(custom_attributes, '{}'::jsonb)
        - 'swt_source_url'
        - 'swt_source_description'
        - 'swt_source_search_term'
        - 'swt_source_purchase_term'
        - 'swt_source_keyword_id'
        - 'swt_source_channel'
        - 'swt_source_realtime_location'
        - 'swt_source_region'
        - 'swt_source_ad_account_id'
        - 'swt_source_wakeable'
        - 'swt_baidu_conversation_type'
        - 'swt_baidu_agent_name'
        - 'swt_baidu_ssid',
    updated_at = CURRENT_TIMESTAMP
WHERE COALESCE(custom_attributes, '{}'::jsonb) ?| ARRAY[
    'swt_source_url',
    'swt_source_description',
    'swt_source_search_term',
    'swt_source_purchase_term',
    'swt_source_keyword_id',
    'swt_source_channel',
    'swt_source_realtime_location',
    'swt_source_region',
    'swt_source_ad_account_id',
    'swt_source_wakeable',
    'swt_baidu_conversation_type',
    'swt_baidu_agent_name',
    'swt_baidu_ssid'
];

-- Historical kind=8 system messages are backfilled from the Connector SQLite
-- store because PostgreSQL intentionally does not retain the raw encoded payload.