I thought there were eight emails found in total that were TS/SCI? Comey (for what little it is worth) said the TS SCI material was not copied directly from source material, but was being discussed by Clinton and the other addressees.
You are correct about the 8 TS SCI emails.
There were a lot of very highly classified Clinton emails that either had the classification markings stripped off or were communications that were out of the Dept of State or various intelligence agencies secret information databases.
There also seems to to levels of classification review - one that dealt with primarily Diplomatic Classified Information “owned “ by the State Dept and Secret “owned” by military and the various intelligence agencies Classified Information that went through security investigation through the FBI in conjunction with the various relevant agencies such as DIA, CIA, NSA for the particular subject matter discovered on Clinton's server and other locations.
The Department of State allegedly was conspiring to downgrade the classification levels of the Diplomatic Classified information “owned” by them when ever possible either to totally unclassified when possible or to a lower level when it was obvious that the subject matter was too serious to sand bag the reclassification.
The net effect was that a lot of Clinton's Diplomatic subject matter emails “owned” by State and normally considered classified at some level were retroactively “declassified” to save her ass and those that they could not get away with a total “declassify” they downgraded as much as they could .
For example a Top Secret document would be downgraded to Confidential or Secret or TS SCI info would be be downgraded from TS SCI to simply TC, S or C.
This was all good and well for the Dept of State “owned” which was under their jurisdiction and subject to their judgment calls in their internal investigations process.
It was a different matter for the investigation of the National Security subject matter under the jurisdiction of the FBI and “owned” by the DIA, CIA, NSA etc. It seems that much Political Appointee pressure was brought to bear on the rank and file of the FBI and agency investigators to down grade like State but the investigators were a harder sell and lot of the info discovered constituted very serious breach, in some cases as bad as it gets.
My post was regarding the three secret e mails “owned” by FBI that U.S. State Department’s Under Secretary of State for Management Patrick Kennedy wanted stuffed down the memory hole so badly that he was apparently trying to barter an improper reduction of classification status determination by the FBI in exchange for granting more FBI billets at State Dept foreign offices abroad.
If Kennedy was trying to get a TC SCI document ruled unclassified that would be a big deal in a bad way. It would also be an even bigger deal in an even worse way if wanted a very politically damaging cable upgraded to Secret to keep it from being subject to FOIA release.
The FBI 302 is hazy on this and clarification would be nice to have.
Sorry for the long reply, but you are qualified enough to grasp the significance.