About the Direct Export Method
The direct export method exports an assembly without retrieving the whole model into memory. Instead, subsets of the model are exported, enabling the export of very large and memory-intensive models. By the end of the direct export process, no parts of the model remain in memory. If changes are made to a subassembly, but the large assembly is not regenerated before the direct export, the changes are not reflected in the model in Fly-Through. The direct export is designed for large assemblies that are too large or impossible to retrieve.
If the direct export is used on very large assemblies, you may get draft quality and an inaccurate model representation.
Use the direct export method for an inactive part or assembly.