I'm probably doing something fundamentally wrong here (even though I'm used to AE's 3D cameras!) but here goes:
I'm trying to set up a camera animation in Invigorator pro (NOT using comp camera). So, I set my camera starting point keyframe in Invigorator, and then move forward in time, then move the camera (using the Invigorator 'camera mode' window and camera animation tools) which then of course sets an ending keyframe. Usually, this operation proceeds as I would expect. However I am encountering problems when using the camera animation tools, for example; having moved the camera and set a keyframe, I try to move the camera to a different position via the camera mode window and the Dolly tool (the other tools give me the same problem), and the camera "snaps back" to the position I'm trying to move it from.