Material bug

Crazy experience on a premade virtual production map. I deleted a material on a monitor mesh and then I couldn’t save the level anymore. This lead to me not being able to get my decklink 8K to live feed on the media bundle. I had to re install the game many times to get the map to open up again. Even after the reinstall and being able to open the map it still wouldn’t connect my live feed. I gave up and let the game sit for a few days. I come back and I open up the map and all the material’s are gone on the meshes but my live feed is working! UE is full of surprises that I am surprised that I am not sure this software is production ready by any means.