I wanted to show off a sword I made by animating it in poser. I started the first frame with it in the case and then went to about frame 30 and made a keyframe. I changed the y translation to pull the sword up out of the case. Then I went and made a keyframe at about 60 and moved the sword forward and down.

What I got however was the sword moving down between the first 15 frames and then bobbing back up to where it should be by frame 30. What happened?