Eloqua updating Child Object on CX Sales Contact

Is it possible to update Child Objects on the Contact in CX Sales from Eloqua? I was not able to find any reference to child objects in the CX Sales/Eloqua integration app user guide.

We are not currently seeing any of the existing Child Object fields for mapping when we fetch in the app configuration screen, but my sales colleague was told from CX Sales support side that they should show up in mapping just like any other Contact Object field...

Any information or assistance would be greatly appreciated!