Predictive Routing API missing trunk metadata for APAC BYOC

Having some config trouble here correctly when querying predictive routing metrics for our 15 APAC BYOC trunks via the /api/v2/analytics/predictive-routing endpoint. The response consistently omits the trunk_id field for calls routed through secondary carriers during failover events, breaking our regional capacity reporting.

Context:
We are using Genesys Cloud API v2 with standard BYOC trunk configurations. This issue specifically impacts our Singapore and Jakarta regions where failover triggers frequently.

Question:
Is there a known limitation or configuration setting that suppresses trunk metadata in predictive routing analytics during carrier failover, or should this be flagged as a platform defect?