This script was developed where morph targets are to be updated in between the animation phase. This script lets you to update a desired morph from another max file retaining it's animation. Also new morph targets can be added without having to merge and delete them by the user
Select the object with a morpher modifier in it's stack by the first pick button, select the max file with the updated morphs which will list the set of objects present in it. Add or update a target as desired.