Lynn,
Both responses above are correct.

To expand a bit... channels with an internal name of:

'Blink Left',
'Blink Right',
'BrowArchL',
'BrowArchR',
'BrowDownL',
'BrowDownR',
'BrowFrownL',
'BrowFrownR',
'BrowWorryL',
'BrowWorryR',
'Frown Left',
'Frown Right',
'Frown',
'LBrowUp',
'RBrowUp',
'Mouth A',
'Mouth CH',
'Mouth F',
'Mouth M',
'Mouth O',
'Mouth SH',
'Mouth TH',
'Mouth U',
'Tongue L',
'Tongue T',
'MouthDisgust',
'MouthSing',
'MouthSpeak',
'MouthYell',
'OpenLips',
'OpenLips2',
'OpenMouth',
'PartLips',
'Smile1',
'Smile2',
'SmileLeft',
'SmileOpen',
'SmileRight',
'Snarl',
'SnarlLeft',
'SnarlRight'

...are caught by the expression morph filter in IPB. By default, the option is set and the expression morphs are filtered out. Option dialogs are accessible from the Options menu or by using Hot keys. General [global] options, such as whether to include expression morphs or not, reside in the Options -> Processing dialog (F4). If you would like for this option to not be set by default, open the afore mentioned dialog, uncheck the option, and save your options (Options -> Save Options File). Saved in the options file, will be the state of all options (on | off) at the time you saved... along with the position (on screen) of all of the windows, the size of the main window (height / width) and the state (visible | hidden) of the option dialogs themselves. The saved options will be loaded each subsequent time you launch IPB. If after saving the options file, you ever want to revert to the default settings... you can 1.)Select Options -> Restore Default Options and then save again, or 2.)Simply delete the "IPBOptions.cfg" file located in the root folder of IPB.

-Rob (code monkey)