I noticed some strange behaviour. Might be the way it's supposed to be though. But FYI:
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[*]I did my 5 test runs and training with the old driver. Got a setup. Didn't write it down outside the game.
[*]Then replaced the guy with a new one with some talent.
[*]Setup is reset to default values.
[*]Test runs is at zero, no test runs available.
[*]Training was reset, training of driver available again.
[/list]