Architect flow deployment fails with 409 Conflict on conditional queue logic

Quick question about Architect flow deployments via CLI. Running genesyscloud architect-flow import with v2.15.1 on macOS. Flow validates locally but returns 409 Conflict on /api/v2/architect/flows/deployments. Error payload indicates ‘Duplicate transition ID’ on a conditional queue node, yet the HCL is identical to the prod environment. Is this a known bug with conditional routing in the latest SDK or a state drift issue?