This has come up before and we are diligently working on connectivity to include this capability. At the moment you would still need to manually upload the file before the reload process.
When applicable please mark the appropriate replies as CORRECT. This will help community members and Qlik Employees know which discussions have already been addressed and have a possible known solution. Please mark threads as HELPFUL if the provided solution is helpful to the problem, but does not necessarily solve the indicated problem. You can mark multiple threads as HELPFUL if you feel additional info is useful to others.
Mike Tarallo (@mtarallo) | https://twitter.com/mtarallo