Width tool problem

Hi, first of all I have to thank you for your intention to help me, and apologize for my low level of English.

Since yesterday I have a problem that I cannot solve. Making two arms symmetrically, I used the width tool. Once I finished them, I wanted to expand the appearance to make them manipulate both arms and what you see in the picture happened, everything got a little out of control. The manipulable points are gone and I need them. It's like the arm stopped being a stroke, became a shape.

And no, this is not the problem. I solved this by duplicating the arm I could manipulate and manually placing it where I wanted to. The problem is when passing the file to After Effects. Although the layer of the arm in illustratior appears with its joints, in After Effects it appears in the same way as my previous problem.

I'm not sure what solution to give to this, but I need to be able to use my arm as a normal stroke. Maybe not using the width tool is a solution, but I don't want to go through there until I know there's no other option. I hope someone who sees this can help me. If I don't make myself clear, please be free to ask whatever you want. Thank you!