Hello,
I'm a vastly experienced professional systems engineer, and specialise in high-performance data parsers, convertors and data processing tools(CSV, XML, TSV, MySQL, SQL Server data DB formats , custom Binary data formats etc).
I can develop a Windows desktop app to do you CSV --> CSV conversions, should you be flexible and realistic on budget.
I would like to see an example of both CSV formats/files - first.
Do read through my profile first...
Best wishes.