Fire Caulk Removal

I'm considering a project to seperate my 240V and 120V circuits into two seperate panels (implementing a battery backup system between to protect power on the 120V circuits, but that's a whole 'nother discussion)
My question today is whether anybody knows of a good way to remove the fire caulk that's sealing in all my electrical wires? I'd like to pull some of them back up through the top of the wall and feed them down between the next set of studs to a new panel. I haven't found any products for removing fire am I stuck risking the chisel method, or replacing wiring, or is there something else?
Thanks in advance for your recommendations!
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.