In the absence of copy/paste or clone functionality, constructing intersections from smaller pieces (saved separately) is the best way to get a consistent layout.
However, at the moment the only way of using a newly saved asset is to quit the asset editor & then relaunch it.
This is obviously far from ideal, and much slower than it need be if only the updated assets were reloaded.
However, at the moment the only way of using a newly saved asset is to quit the asset editor & then relaunch it.
This is obviously far from ideal, and much slower than it need be if only the updated assets were reloaded.