wpgraft needs no access to your Framer account, no export file and no API key. It reads the page as your browser rendered it: the real elements and the real computed styles on each one, at every width you ask for. It then builds that as a Shopify section made of theme blocks, with every style in one of the blocks’ own settings. Nothing that arrives depends on Framer still being there.
Framer has no way to export a design to Shopify, and Shopify has no way to import one. So this is not an export: you open the published Framer page, point at the part you want, and it is written into your Shopify theme from what was on screen. The Framer site keeps running the whole time, so you can move one section at a time.