Managed/Unmanaged Solution Entity import

Hi,

I have a CRM system which has been customized.  I am trying to import these customizations into another CRM Online system which I have set up for testing.  The problem occurs when I try to import it as an unmanaged solution.  I get the following error on the Service entity:

"You cannot complete this action for this component because of the configuration of its managed properties."

Is there any way I can overcome this?

Thanks in advance.