yes the single upload and download works. But not without issues if you use strange characters, i.e. characters above #128. But SC made some fixes. I don’t have issues with corrupted files. What happens is that if you upload a file, you cannot directly click on it as it is still in the temp directory. Clicking ok will actually move the file from temp to the destination. Then you can download the file. It’s not actually a SC issue, but a php issue. php requires the two step approach.
I use the upload to upload a csv and process it. It goes in two steps: first you select file and wait for the file to be uploaded. Then the file is diplayed by name. Then you click ok and the file becomes vieable (hyperlink). Then you can process the file otherwise you get a filenotfound error.