Poser is like a woman Ryu, you got to know how it ticks and then you will appreciate it.

DAZ has a plugin that gives you the keyframe editor but WITHOUT the graph editor, for me it is useless.

 

 

So Poser all the way for me.

 

I think the reason 0-177 messed up is because you only set keyframed 178. You should have keyframed all of 0-177 before importing the next batch. It created a chain reaction for sure you used the spline section (green one).

 

And yes if you Turn on/off IK, the limbs suddenly jump. That's just the way it is. A workaround will be to create a second figure and hide everything but the hands and foot that will serve as your guide. Color them differently as well.

Passion is anger and love combined. So if it looks angry, give it some love!