I'm not sure of the answer but I'll refer you to the icd forum I'm a member of and I know there are some who have had theirs taken out - icd support group . o r g - make it a web address or google ICD support group
Well I cant answer your question, I am curious about this because my brother has a pacemaker and they explained to my parents that your heart can only hold so many wires and they dont remove the them because your heart grows around them. I would assume they by that, that they would leave the ones in your heart as is ,but remove the pocket stuff. I will be curious to hear what others say.