There are a few hoops I have to jump through to get a video from Camtasia into Premiere so I thought I'd document the process.
1. capture the video
2. save camtasia file. This will then open up the camtasia editor
3. right click of the camtasia file and extract contents. Now you have an AVI and a bunch of other junk. I don't care about the audio or cursor stuff so I just delete everything except the AVI.
4. drag the AVI into prism and convert it into a high quality mp4.
5. import the mp4 into premiere and you are good to go.
If you do not convert the avi into mp4, premiere will stutter horribly on the avi. The avi plays fine in windows media player but premiere is not happy with it.