nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqm0vcr0caxjdqex0pk5kpsqlt3emc2mcajvmlzdq0px3rm6v6wjzqm7ulpn To answer:
1. Yes, the original stays on your machine but the URLs are rewritten by the plugin.
2. Depends on your page builder, but not in "stock WordPress" AFAIK. Elementor and co will probably fuck things up somehow.