migrating after local development

Hi,

I am developing locally and am not far off migrating. If I use this plugin to point at a subdomain for my images – how will this affect the migration? I am using another plugin call duplicator that I think only looks at the WordPress directory itself not to a subdomain. Would I just create another subdomain on the production server and then update the directory after the migration (using this plugin again)?

http://wordpress.org/plugins/upload-url-path-enabler/