Issue:

I’m new to your program and teaching myself how to use it with your tutorials.

I’m having an issue with a file I imported from Revit.

Even though I have different flooring in certain areas, when I go to change the material in Lumion for one of them, it applies the change to all.

Answer:

Please ensure you are using the latest version of the LiveSync for Revit plugin to export/import your models.

See our Knowledge Base article: Download Lumion LiveSync for Revit

And for managing materials for specific surfaces see section 5.2: Why can't you assign a Lumion material to individual surfaces? in our Knowledge Base article: Model import guidelines for Revit and Revit LT.

If you are still having problems then Contact Us with details about the model.