The GEDCOM export files are named consistently with the name of the tree. However, if exporting GEDCOM is to be an efficient backup process for keeping a master tree in rootsfinder it would be helpful to tune the process. I have separately raised other requests in regard to the GEDCOM (setting the root family, option to schedule exports, name the tree in the email notification) and now request one more.
An easy one! Just include a date and time stamp on the GEDCOM file name so the export can be easily filed with other backups.