the old engine? are you trying to use these assets in say 4.20 when they were made for 4.7? you know the way materials are rendered and many other aspects have changed since 4.7 right so you will likely need to tweak many things. im not a materials expert so i may not be able to guide you to the exact right solution but good luck. also when comparing the video to the screenshots on the forum its hard to see much difference.