conversion errors from smart plant 3d to navisworks

Hello everyone,
I have a 3D smart plant model in navisworks and I want to export it to UNREAL ENGINE through the datasmith option, however, when doing this process, many elements in Unreal are displayed as a block and this way would not be useful for me. assign materials and animations. Does anyone know how I can solve it?

When exporting a 3D Smart Plant model from Navisworks to Unreal Engine using Datasmith, you may encounter issues with some elements displaying as blocks. This can result from factors like model complexity, incompatible materials, or Datasmith settings. To address this, you can simplify the model by removing unnecessary components, change materials, tweak Datasmith settings, and if the problem persists, consider exporting to alternative formats like FBX or OBJ for importing into Unreal Engine.