Hi Sylviani,
I believe the reason you are getting different program names in DEV and QAS for your query is because of using the 'download' and 'upload' options to move the query. If you use 'export' instead, then the query (and possibly its infoset, depending on the option you choose) should be written to a standard transport, which can then be imported to QAS (and later PRD) via conventional transport means. This should keep your program name consistent across the systems, and thus your tcode assignment should work.
Regards,
Matt