How to Swap Components in Figma After Detaching from Relume

newbie here...is it possible to swap out the components in Figma now that they are no longer attached? I tried to do most of my edits in relume but now as I'm designing out the wireframe I'm realising I'd like to change some of the layouts, and I can't figure out how without having to start again or individually pasting in the component and manually swapping out the content. Is there a simple way to do this? Also, where I had global instances in relume - they are no longer connected in figma...is there a way to fix this?