KeyTweak is a AE script to easily modify keyframes of masks, trackpoints and any other properties. It is completely free. Usage is explained in the linked video tutorial.
File Type: Script
After Effects Version:CS2 (7.0) and above
View Tutorial
and download script

Amazing…
thank you very much for releasing this to the community. That is very noble of you.
Mhh… for trackpoints it is like parenting the layer to a null object.
But it is great for keyframes of masks because in AE you cant track masks at all.
Thanks guys, keep it up!
> But it is great for keyframes of masks because in AE you cant track
> masks at all.
Except if you use the scripts Tracker2Mask and/or TrackerViz to track masks.
Thanks for the feedback!
This is a great tool and i’m a newbie, can someone please tell me how to install a script?
Thankz..
@Mcnosh – http://aescripts.com/faq/how-to-install-and-run-scripts/
Lloyd, thank you for the link..
Thanks a lot
Great Script
http://motionsociety.com/blog/