After migration if you have mobile application projects that contain composite relationships and the child MBO load operation has no parameter dependencies on its parent, you must redeploy the package from Unwired WorkSpace using Update mode to generate the correct loadGroups for the deployed package.
Child load operations that do not depend upon parent parameters do not always generate orphans. Consider the case where the user wants to load all sales orders and line items created in the New York office. New York may be a load parameter for both parent and child that is bound to a personalization key and results in no orphans, even though the child does not get any load parameters from the parent.