Further support isn't necessary since we found a way to solve the problem on our end.
The problem was the the object was not defined in the WSDL, but it was still required so that TestComplete could recognize and collect its contents.
I don't oversee the WSDL, myself, but I'm assuming it is automatically generated and we avoid manual edits so that they won't be overwritten if it needs to be refreshed. We solved the problem by creating a dummy method that passes the object in question directly, forcing it to be defined by the WSDL generator.
Thank you for the offer of help, though. :)
