MAYA disappear constraint blue channel

pashechca

I baked my animation on skin joints whose was parentConstraint to control joints,
now i need back them to follow that constraint,
i delete all animation on them, but i see that they channel don't have blue color anymore,
but all constraint stay in place in outliner and they still stick to joints,
but they don't work anymore at all,
please help, or  there should be some specific method to delete baked key to stay constraint no problem?,
i have maya2016,

pashechca

i clarify, the constraints after bake stays in outliner .they still stick to joints ,but they don't work anymore at all,
please help,