I am not sure this is the correct place to ask this but here goes.
In the process of writing a case study you hire a genealogist to conduct research for you in records that you don't have access to. Additionally the types of records they will be researching are not in your bailiwick. In the process you supply the genealogist with your draft of the research you have already done. Part of the report you receive back contains a critique of your draft. The critique is extremely helpful and provides an alternate interpretation to a fact that makes several pieces stronger. What is the best way to incorporate the new interpretation in your case study? How do you acknowledge the genealogist? Is it appropriate to say something like So and So of xyz company provided another interpretation for such and such then cite the report?
Additionally in writing my case study I don't want it to appear or imply that I searched the records that I contracted out. What is the best way to handle this?