InsertMoveCopyBody2 will add a feature and is available within a part. It correlates to the Move/Copy Body feature from the user interface. Transform is typically used at the assembly level to move a part or sub-assembly as you would do by dragging parts. It doesn't add a feature, just re-positions components. The two are different tools for different results. Math transforms can be used to edit an existing move body feature as well, but not to create the feature. Hope that helps!