C++ program the works except for one small change is needed.

I have a C++ program my company uses. I'm not very knowledgeable regarding C++. I do C# mostly. I don't want to spend the time to find the solution to this. This .exe (source to be provided), picks up a file and reads it into an Access db. That all works. However, in the file lately, there are values that are missing. I need to check for these missing values and populate them from values in subsequent rows, based on matching conditions of course. (See [login to view URL]) The [login to view URL] file will provide a step-by-step of what is needed. I will provide actual C++ source project and data file to you if you are chosen to complete the project. Please be advised, I don't need the project built or even tested. I just need the code to resolve this issue and know where in the source to put it. Thank you!