Every time I bake the structural model from grasshopper to Etabs, it overwrites all the old stuff and creates a new one. Is there anyway to script it in order to bake to add elements into an existing model? so that I can bake in a few batches for some massive structures.
This may fix your issue, however there might be problems if you use the same components to generate different parts of the model, unless you carefully create your own naming conventions.
If you are still encountering issues, there may be some future advancements we could make that could help this process.