I am also facing this issue. I managed to work out that exploding the groups and regrouping them works, but it is also affecting lots of my FlexTools objects, which I need to remain as dynamic components. I have found Profile Builder 3 objects are particularly badly affected, but only when drawn in the green y axis!
Recently native sketchup objects have also been turning black on import. I have discovered that any object copied and then flipped seems to have an issue. Also objects using the flip tools in the FlexTool toolset have this problem.
@ubt.360 mentions using modelling mode to flip the normals and as stated, these do reset on reimport. An alternative fix is going into each static mesh’s settings and applying recompute normals. However, this is a longer process and also resets on reimport for some reason… Why this isn’t saved as an object override I am unsure.
I am now exploring the option of importing into Twinmotion, then exporting as datasmith from there into UE5.2… Let’s see what happens.
Has anyone had time to try 5.3 preview with the new datasmith plugin for that version?