Key frames getting deleted when you add a pose using Manuel Bastioni plugin

I am using Blender 2.79 with Manuel Bastioni plugin 1.6.1 ; when I add a pose and keyframe it , existing keyframes are getting deleted. Is there anything I am missing ? kindly advise

I found a solution for this. I added Manuel Bastioni Poses into Pose Library , then used it for keyframing, it worked . Thanks.