Data Action failing on WFM schedule payload transformation

Quick question, has anyone seen this weird error? with a Data Action in Architect that transforms WFM schedule payloads before sending them to our external HR system. The integration works fine for standard shifts but crashes when processing bulk shift swaps in our Chicago environment running Genesys Cloud v24.5.0. Here is the specific error from the debug logs:

{
 "error_code": "TRANSFORM_FAILURE",
 "message": "Invalid date format in shift_swap_end_time",
 "context": "wfm_schedule_publish_event"
}

The timestamps coming from the WFM API look valid ISO-8601, but the Data Action keeps rejecting them. Is there a known issue with how the WFM publish event formats dates for downstream integrations?