Add images as materials while KMZ exporting


I want to export my entities using the exportKML functionality in order for them to be imported from Google Earth.
The problem I came into is that some entities, specifically my polygons, use ImageMaterial materials, and these are not correctly exported. Basically the polygons appear white on Gogle Earth and in the kmz file there are no images attached or anything.

How it looks vs how it should look:

My question is, are there any ways of exporting my ImageMaterial materials with the entities themselves?

Thank you!