1. A method for generating build sequence data for a computer-aided design model of a three-dimensional object, with the use of a computer configured to communicate with a layer-based, additive manufacturing system, the method comprising: identifying a location of an insert data representation in the computer-aided design model; slicing the computer-aided design model and the insert data representation into a plurality of sliced layers; generating support layers for at least a portion of the plurality of sliced layers; and subtracting, by said computer, a geometry of the insert data representation from the plurality of sliced layers at the identified location to generate an unfilled region in the computer-aided design model after generating the support layers.