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Thanks guys for the input.  I am thinking then about killing the one domain www and then re-institute the name www over the ww2. That sounds like the best oprion for what this situation is.  The ww2 has about 600 pages indexed (which is the new website) and the www (which is the old site) has 10k pages indexed but at this point just to clean it up, then this sounds like a good way to go.  Also the directory structure is not the same.  Lead gen unfortunately is not part of the digital strategy so I guess losing link juice may not be as important.  Eventually the new site pages/pdfs will be ineeded.

thanks for the feedback. Just wanted to reconfirm my thinking.

Our IT department wasn't able to create a new directory on the current domain name for whatever reason and so we had to create a new domain name called ww2.domain.com to build the new site.  So now we have the new site up and appartly some PDFs and pages are being directed to the from the old site.  www.domain.com but 10,000 pages /PDFs are still indexed in Google and are not redirected.  So when you open the page you get the old www.domain.com instead of it redirecting to ww2.domain.com.  It's sort of a mess!  My question is can we just kill the old domain name and move the ww2.domain.com back to the old domain?  We also want to do away with the ww2.domain.com and go back to www.domain.com.  I know it's confusing as heck!

What would you recommend?