Sounds like maybe you are doing an extra step in exporting from 3d to some kind of “temporary” “throw away” project?
You can just export into the project you want to use the asset in (and reimport as needed).
(eg Make a folder called MYTESTASSETS to experiment in, and simply move them to another folder in the same project if you want )
If you want to make a reusable set of assets to be used in multiple projects - you can move your assets into a content plugin.