It's a bit like selling someone a car that does 150mph and then complaining when they bring it back to you, broken, because they have been doing 150mph in it when you were expecting them to keep it to 70mph.
Revised Statements of Usage and Operational Intent have been the norm in UK mil aircraft - saw it in both the Lynx and the Sea King because the actual operational fatigue spectrum 'wasn't what it was designed for' and they needed more data. All despite being used within the limits of the ODM (RFM)