Groups like the Georgia entrepreneurs are, essentially, the future of the Confederate economy. The Confederacy very much was an export based state, so the maintenance of overseas mercantile connections will be paramount to the maintenance of the economy going forward. Cotton, tobacco, rice and eventually sugar, are going to be the cornerstone of the Confederate economy. In exchange they'll be getting access to cheaper European manufactured goods and finished products. Part of that is an opening of the door to European markets that was simply not possible in the US (even with moderate tariffs post-war, the Confederacy has a way lower import cost than the US) which will make them the export market of choice for cheaper European goods. That, naturally, is going to have a negative impact on the US economy.
So too will the South's desire to import European rail iron and locomotives. During the war much of the existing railroad infrastructure was destroyed in the Upper South, but unlike OTL they didn't have to cannibalize their existing railroads to keep them going and could import rail iron, engines and other stock or machinery from Europe. This trend will continue, which won't be too bad for American rail industry in the long run because they're about to be building across the continent to the Pacific.
The notion that the Confederacy would want an agency (of what sort I'm not 100% sure yet) to promote more integration or investment from European economies is absolutely on point. I'm reading more into that at the moment, but efforts by economists from the Confederacy to better integrate with the European market are going to be driving forces in the post-war economic world.