That's OK Bob, your knowledge is more than mine :)

I did work this out myself though. Apparently once it is a child object then MM.NET uses it as an entity list, not an entity.

>Frank,
>
>As my knowledge of the Framework under the covers is limited, I do not have an answer for you. I would then defer to Tim. Sorry, I can't help any further.
>
>>Hey Bob (or Tim),
>>
>>I now have my code in both HookPreSaveEntity and HookPreSave, yet when I call the Parent BO's SaveEntity() this code does not get called. Where else do I need to call my code?
>>
>>UPDATE: I needed the code in the HookPreSaveEntityList since this was a child business object
>>