If you have optimized an asset in your project, or if you have a new import of an updated model coming from a PLM system, follow the steps in this video to replace the asset (i.e. put the new file into your project):

1. Select the object you want to replace / optimize in the Assets in Use > right click > Replace project asset.
   
2. Select a model that you want to use as a replacement
   
3. The mapping states are based on a match in name and triangle count, the different mapping states are:
   1. DELETED: the node name is not found in the new asset
      ADDED: the node name in the new asset did not exist yet in the old asset
      MODIFIED: the node is remapped, but the triangle count is different
      REMAPPED: there is a match in node name and triangle count
      

Using Replace Project Asset can help you to keep your project 3D data up to date with the latest changes coming from you product lifecycle management system.

Learn more: 3D Asset Optimizer: Improve performance of heavy models with the CAD Pipeline.