Predictive Outbound Campaign 422 during Terraform Apply

Just noticed that the predictive outbound campaign fails to update via the GC Terraform provider in our AU-1 BYOC environment. The plan succeeds, but apply throws a 422.

Error: Error creating Predictive Outbound Campaign: 422 Unprocessable Entity
Details: ["Expression 'skill_match' is invalid for predictive routing"]

The skill ID exists and is valid. Manual creation via API works. Is there a known issue with the provider handling predictive routing expressions in BYOC?