War Is Good For Business is bugged so you are not able to scan the freighters for the Kemocite. I have tried multiple times but it starts the scan and will not complete it! So frustrating LOL. Hope a fix comes soon cause you cannot progress the story line if not. Hope its not just me lol.

Come to a complete stop, before you scan the freighters, and it should work

Yep, you have to stop and then you can scan. The same happens sometimes on Holodeck when I try to scan anomalies in Exploration Clusters.

Edit: Tested it in War is Good for Business and also Treasure Trading Station. Freighters can only be scanned when your ship is at a complete stop. This makes it unneccesary difficult and risky in combat situations which leads to the assumption: it must be a new feature. Just think about the Klingon Transport Raid missions when you have to stop for scanning the transport

Had an issue with Captain Mok at the end. Took his shields and health down to zero, and he kept fighting. Eventually I just ran up to him and was able to tag it, though it took a couple tires as he kept shooting me.