Alembic file exploded

Hello! I have seen similar question posted but none resolved…

My alembic file got exploded after import in UE. The location of the components are out of place. The file works perfectly fine in Maya. I don’t want to flatten the tracks as I would like to apply different materials to it…

Also, it seems like the exploded is by chance since the exact file worked before, but I can’t get it to be stable enough to import the others… Wondering if it is a bug…