Unfortunately we do not yet support the conversion from CFG to CSV yet.
We always recommend our users to try and convert their files, even if we state here we can't do it. The reason is that we use some techniques on our servers to detect common errors in file extension naming. You may have luck and we can fix this automatically after you have uploaded your file and convert it from cfg to csv.
Search for supported file types
Enter source and target file format to check if we can convert your file