Drag & Drop from package to package

[Bruno.Cossi]

I often find myself in need of moving objects between packages. As we use security, I understand that I have to apply a lock to the target package, fine... but why do I have to apply the lock to the source package as well? Would not it be enough to lock just the object I want to move?
As we have multiple people working on a model, it is not always feasible to lock the whole package... just to move one object from it...