Amazon Lex ChatBot V2 Console Adding new intents with Import failure

Hi - I exported the Draft ChatBot from the Amazon V2 Console and carefully created new intents (hundreds) with the corresponding folders and Intent.json. When I returned back to the Console and imported the chatbot (zipped) with the new intents, the Import will fail with little or no specific details. I verified that the new intents match up with the intent.json that I downloaded. I am a newbie, but need some assistance and I could not find much info on this topic online. The updated json with new intents matches the online examples and the json that I downloaded from V2 Console. Thanks for your assistance.