How to import a scene into UE without duplicating assets in the folder browser?

I made a scene in blender made out of instances of a modular set. I want to import the buildings into UE without merging them. In UE I would drag assets from the browser into the level and that would not create a new asset in the browser, but when I import a scene made our of several objects that are exactly the same (modules), it creates several of them in the browser instead of just one. How should I import it correctly?

edit: I have three walls that are exactly the same. I have tried to export them as duplicate objects (not instances) from Blender to UE, and I have also tried exporting them as instances (linked objects) from Blender to UE and in both cases it does not combine them, rather it keeps them as separate objects:
image

I would like to build my level in Blender since it is much better for modeling but of course I do not want to create thousands of objects.