Thanks animagic I really appreciate the fast response!
My issue specifically is that I am seeing a discrepancy between how character models export from CC4 even with the same export/import settings.
For both Coyote and Camila I am exporting with the Y-Up setting:
75% of original size (was 670x19) - Click to enlarge
However one comes into Maya with the OrigShape down and the other with it up the correct way:
75% of original size (was 670x19) - Click to enlarge
This is an issue in our pipeline as we want to receive exported CC4 assets from clients and put them straight into our custom engine without intervention, but that requires a trip through Maya.
Currently I see no way for us to predict if characters will import correctly when the system is automated.