How to disassociate/reassociate comment with post

I wrote a long post the other day. I included the Intense Debate JS at its end. My intention from the first was to clone the post and divide it into parts. Specifically, I copied it twice and renamed the copies' URLs so all 3 are now unique. I deleted all but part 1 (plus the I.D. JS) from the first post and published it. I deleted all but part 2 (+ID JS) from the second, and all but part 3 (+JS) from the third. Note that only the first post is published as of now.

Somebody commented on the first post, and the comment appears (at least to me, the admin) on all three. This will mislead or confuse any blog readers when I DO publish the follow-on posts, and is not what I want to happen.

What can I do to correct? Thanks in advance.

Mark