The issue with the change game id is a bug. Other than that issue I can not find anything wrong with it.
Then next time you think there is an issue can you post the problem in detail?
Assist should not be in either killed or killer list.
Maneuver kills are in the lists.
Also the lists are across multiple arenas where kill stats are not.
HiTech
Here is proof of the issue:
Fact #1: I have 29 deaths so far for Late War Tour 163.
Fact #2: I have only flown in Late War Arena and nowhere else.
Fact #3: 8/10 of my "Last Killers" have not killed me.
Fact #4: Those same 8 players have been killed by me.
These were extracted from a screen shot taken on my last sortie tonight -



The players underlined in red never actually killed me. Quite the opposite, in fact.



BTW, those 8 players were all killed today.
Kind of interesting that the "Last Kills" and "Last Killers" lists are nearly identical.

One clue may be that bigbilly was my last kill before logging off earlier today and the first erroneous kill on the "Last Killers" list.