I haven't used the shortcut function, but we do upload our SCORM files to a file repository (https://docs.moodle.org/37/en/File_system_repository) in moodle and then add them to each course where they are supposed to be by browsing through the repository. If you have an identical SCORM file used across many courses, you could use the alias/shortcut function.
See: https://docs.moodle.org/37/en/SCORM_settings#Alias.2FShortcut and https://docs.moodle.org/37/en/Working_with_files#Creating_an_alias.2Fshortcut
See: https://docs.moodle.org/37/en/SCORM_settings#Alias.2FShortcut and https://docs.moodle.org/37/en/Working_with_files#Creating_an_alias.2Fshortcut