Greetings,
I am using Cisco Firepower Management Center and have an existing network list created for blacklisted IP addresses. Problem is when I try to upload an updated list from the location I have used for the past 3 years, the number of addresses listed in the upload box goes from the previous count to 0. I have tried different locations to upload the file from, but the count always drops to 0. I can download the current file in use from Firepower, but can not then upload it, adjusted or not. Any suggestions would be appreciated.