Saving of native previews
For now, all assets are saved with black square instead of normal native preview. The issue is caused by limitations in the Blender API and will be fixed in the future.
Managing external files
If material is missing in your scene, it can still be exported and will be visualized with a pink preview. For now, the integration doesn't handle these situations. We recommend running the "Find Missing Files" option from File -> External Data before adding assets to Connecter.
Saving materials from linked assets
Currently, if you use "Add Materials from selection" on a linked asset, it will work, but the saved files and previews will be white cubes and won't represent the real materials. This is caused by a limitation in Blender and will be fixed in the future.