CompuServe Messages

Suppose you have a long animation 3000 frames. Suppose you render all of the frames and you like what you see on your PAR but you find one flaw in the camera motion for about 100 frames. Suppose you must change the path for the camera for those 100 frames and ONLY those 100 frames. Now the question part, how do you go about ensuring that the rendered frames before and after the bad 100 match up exactly when you splice in the newly render ones? Moving a key or adding a key appears to change the motion path at least as far as the next key frame and maybe further which causes a non-alignment when splicing the frames back into the completed animation. I haven't found any Continuity/Tension/Bias settings which solve the problem. Any insights? Thanks. Bob