I have reached 400 in Cybertech, Underworld Trading, and Scavenging. I purchased Advanced level for all. I noticed that Grade 9 Scavenging missions were grayed out when I purchased the advanced scavenging. I logged back in later, and advanced Scavenging was gone. I had to repurchase it. The Grade 9 mission level is still grayed out. No problem with Cybertech or Underworld Trading, only with Scavenging. Has anyone else seen this problem in 2.8.1?