Anyone had any issues with migrating Global Service Monitor tests to Azure App Insights?

I’m getting failures on all but one of my GSM tests, invariably with the following PowerShell:

There’s very little on the web about it as it’s ‘just supposed to work’ 🙁

(I know it was supposed to be done by 07/11 but I have managed to export one test today – I can’t see anything different between the successful one and the unsuccessful ones!)

Peter Aston asked