26B Redwood Quickpay - where are the debug logs?

Summary:

26B has introduced Redwood Quickpays. When you run them with debug enabled, where do you retrieve the logs?

Content (please ensure you mask any confidential information):

In the responsive quickpay, it was an easy step to download the debug logs when you ran a quickpay. (Actions > View Task List > (Calculate QuickPay ) Actions > View Logs > CWorkerJob)

In the Redwood quickpay, presumably the log file for CWorkerJob is where we would expect the debug output. But that log file is effectively empty. It seems that the Redwood QuickPay is not generating debug log output when you set the debug log flag.