If thesame model would be used more then once, ProAsmcomppath will be different for every component and will describe transformation from global assembly coordinates to the default coordinate system of the model for the specific component. This transformation should be used for creation of coordinate system. Take a look at the attach video of the similar application.
In Reply to Christopher Gosnell:
Interesting... So far all of the components we have only have one csys locating the part to the 'master' csys.
Not that aircraft designers ever re-use the same structural part twice in the same airframe (/sarc/)
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