Movement Types - how to change determined Movement Types in Delivery Creati

hi,

Is there any way "material movement type" can be changed once its been determined in the delivery, or durin delivery creation (after creating the sales order)

is it possible to override the material movement type creation, (apart from the control which we get by the schedule item category field).

Is there any way to change the material movement type in a deliver document ?

thanks any help would be truly helpful.