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DC: Just to confirm the behavior for this one: when you say last-one-wins, this is only the case if more the one replacement-CDM is specified, right? Because additive CDMs would still be mapped. Thanks.
PBW: That is correct. Also, if you have a number of ADDITIVE CDMs, and add a REPLACEMENT CDM at the end of the list, it will replace matching concepts that were added. If you replace, then add, ADDITIVE will add the concepts the mappings. Ordering is important. I've also added a few docs about this; see Configuration Schemas.
Examples
Example definition of CDMs for a knowledge module
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