TBH I don’t know what kind of file it is… I saved templates throughout the process as shown in that video. I don’t even know how to determine if a node is a Mental Ray Node so I don’t even know what to look for. After some searching around I found the DAG Object Only option in the Display menu in the Outliner… unchecked the box which just showed up a bunch of stuff… Not even sure how to look for these Mental Ray nodes to delete them.