Hello, I get the following error even on the simplest query, when an MCF metrics is used: "'mcf:impressionAssistedConversions' is not in list"
We have fixed the error. However, we still cannot permit combining metrics/dimensions from MCF group with normal GA metrics/dimensions (except temporal dims). If you need the values for that metric, you will have to use MCF dimensions for now.
FYI, there are some dimensions that have the same value, but ones are for normal calls and the other for MCF calls (i.e: for campaign name we use "Campaign" for normal calls and "Campaign path" for MCF calls).
Sorry for the inconvenience.