Welcome to the Q&A Forum

I searched in Google, the number of URLs indexed left in the seomoz.org domain since it changed to moz.comI am surprised that after all this time more than 15,000 URLs indexed:https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=site%3Aseomoz.org%20inurl%3Aseomoz.org

If I clicked on any of the results it will be redirect (301) to the new domain, so it is working, but Google still keep these URLs in the index.
What could be the reason?Will not cause duplicated content issue on moz.com?

Thanks for your Answer Ikkie, but my question was especially about using "utf-8 symbols in the Title/Meta tags".
Should I use, or not?

Has somebody any experience (pros or cons) to using utf-8 symbols in the Title or in the Meta Description tags?
Expedia uses it:
http://prntscr.com/74ofrv

74ofrv