Economist here working on geoeconomics. I can assure you we didn't forget the field of IPE. We actually highlight the disappearance of these ideas in Economics and make clear they were always in Political Science. This is the comparative citations to Hirschman's National Power by field.

Looks like the world is losing faith in the dollar as the global safe asset in real-time. USD as global safe haven means when markets panic, dollar appreciates. Not today, with dollar down stock market plunging. This graph is all daily stock market changes and currency moves. Today's a big outlier.