datasmith and automtive material migration

Hi, I’m hoping someone can help. I have a sketchUp model that has been exported out as a datasmith file. I have succesfully imported it into unreal engine. I want to swap out the materials and have found articles that say to use the migrate asset function which I have. The only issue is that it says when migrating to pop the material assets in the content folder. I do not seem to have one gereated when exporting the datasmtith file. I have however dropped the content within the file structure and can see it as a M_Glass.uasset but do not know how to import this content. Can someone point me in the direction of a tutorial that best explains or help otherwise. Any help very much appreciated.

Are you talking about swapping out a material that comes into the level via datasmith, with a material you’ve built yourself in a folder/library? A replacement process?