Withholding Tax Rates do not appear in 'Manage Withholding Tax Classifications' screen

Summary:

After setting up Withholding Tax - 'Tax' defined at BU level ('Tax') , followed by Withholding Tax Rates : searching for the Rates in Manage Tax Rates screen shows no values . Searching for the 'Tax' defined - we are not able to find it neither. Trying to create a new 'Tax' , just for checking, we find that system only allows to choose under Global Configuration Owner and none of the B.U defined. Not sure what has happened since the Withholding Tax Rates have been defined.

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