Create new assembly.....causing reordering of components

We are running SW2003; when we select components from the design manager and
then "create new sub-assembly here" typically this will result in a new
sub-assemlby that contains all of the parts in the order that they were in
the feature manager tree. When we select several parts (60 or more) and
perform this same function (selecting them in the same order) the order of
the parts is reversed in the design tree.

Is there any way to avoid this from occuring?

Thanks in advance

Rich