I imported a large number of licenses using the comma separated format in the EAM license management module. This ended up creating a ton of duplicates. I checked the string I used to list out all of the licenses and there were no duplicates. I am wondering if anyone else has experienced this and if this is a bug within the module?
It's likely a bug. I would file something with IA Support, so that they can try to replicate with your exact license list. We can't really help directly on the forum, as it would be best to not publicly publish your license list.