Rate definitions - how to disable "Reporting Required" after creation

Summary:

A rate definition has been built and used for some time in live mode but also has "Reporting Required" ticked. We need to stop HCM Rates picking this up.

Content (please ensure you mask any confidential information):

A rate definition which will only ever be used in live mode accidentally had "Reporting Required" ticked when it was created. When we are running the HCM Rates process this is a) making it take longer to run, b) causes some errors. But there isn't an obvious way to stop a rate definition being picked up by Generate HCM Rates, this tickbox is greyed out and can't be changed.