DataPortal.ProxyModes not found

Hi,

When I try to use DataPortal.ProxyModes as the second parameter in my DataPortal.BeginCreate() method I get the error "Unknown member 'ProxyModes' of 'Csla.DataPortal'"

Has ProxyModes been removed from Csla.DataPortal? I use version 4.5.601 of Csla.

Thanks,

Peter Centellini