I know this is an old topic, but I do what @Skylmingamadur does. Export a low poly build of the RC model, bring it into Artec, align the Artec model to the RC model and export that. Make sure to copy the RC.info file and rename it to the Artec scan and then you can import it back into the correct position and project.
I also do two texture passes. One is a direct texture from the Tool bar itself, and I also use a Texture Reproject from the RC model. using both you can mask out any errors that the other may cause in Photoshop or Substance painter