wpgraft never reads Webflow’s data. There is no exporter, no importer and no shortcode translator anywhere in this, by design, because those are the parts that break. wpgraft reads the page as your browser rendered it: the real elements and the real computed styles on each one, at every breakpoint you ask for. It then rebuilds that as Elementor’s own native elements, with the styles written into Elementor’s own fields. Nothing that arrives depends on Webflow still existing.
Webflow gives you a code export, not an Elementor page. The export is a folder of HTML and CSS that nobody can edit in a panel. wpgraft goes the other way round: it copies your published Webflow site, which is just a web page, and rebuilds it as Elementor’s own elements. The Webflow project keeps running while you do it.