You need to re-create this all again.

• Check if your OpenTelemetry Collector is still sending traces to Cloud logging, and check it is associated with the correct project.

• Try to recreate the BigQuery dataset, this is where all your trace will go. Also delete the ‘Sink’, do this before re-creating, to break the existing link from Log Analytics to BigQuery

• Reconnect OpenTelemetry to BigQuery, check if this send traces still set up to send data to BigQuery

• Put the data back to BigQuery, and OpenTelemetry will sends traces to BigQuery, check your permission and you should be able to verify in Log Analytics