If, for example, you've exported a material to LocalDB that uses a single transform node to control the tiling of multiple textures in a material... when I import from local DB, each material has its own transform node instead of sharing transform nodes, like it was originally exported as. Much of the time you need multiple textures to tile at the exact same rate so this is imperative to have working properly.
Working in Maya 2019.2 and Octane plugin OctaneRender for Maya 2019.1.4-15.13 [STABLE]