This is a mel script that is used if you have animation that you want to transfer from one rig to another.
The requirements are that each rig be constructed the same exact way with the same naming conventions.
Instead of taking each control individually and copying and pasting the keyframes from one rig to the other, you can select the initial source's controls first and the destination controls second, click a button to transfer, and voila.
The animation should be correctly transferred between rigs.
To view a README go to https://www.nickwoanimation.com/Scripts/melScripts/readme/nwTrnsfrAnim-README.php.
This script was only tested in Maya 2011 but will probably work in earlier versions. If you have a problem in an earlier version, send me an email.
**Update Feb 27, 2011**: I did a bit of testing in previous versions like 2009 and 2010. They should work fine but there may still be a few bugs. Please let me know if you find one!
**Update March 7, 2011**: Stay tuned! I will soon release a version that detects all of the rigs in the scene and autoloads each control into the appropriate list! This will increase speed dramatically! Also, if there is a request or a bug that was detected, don't feel shy to make that known on the script page. Thanks!