Bone tool and symbol looping

I have created a bone tool and the face has symbols with facial features like eyes and lips etc. Its all good. However, when i go into symbol timeline,its not matching with the timeline. I tried all the possible things but it doesnt work.

I realised if i make poses without copying, it has no problem but if i copy and paste any pose, it makes that point as loop. and the symbol timeline resets there. I even did join armature so maybe keyframes makes it reset but no, only copying and pasting does this.

Anyone can help me as im burning out. I cant start to project

Thanks in advance