Where was Mary Kiffmeyer born?

For the as long as I can remember Mary Kiffmeyer has been claiming that she was born in Pierz, Minnesota.  According to her website:

Mary was born December 29th, 1946 in Pierz, a small Minnesota town south of Brainerd.

This information also appears on the CWTC site and her Wikipedia entry.  But it doesn’t appear on the WCCO voter guide.  No, the voter guide has the following information under “birthplace:”

Balta, ND Moved back to Minnesota when 4 yrs. old

This could easily be a mistake but it is still intriguing.  I have yet to get a hold of the Kiffmeyer campaign and WCCO has yet to get back to me, but other campaigns have confirmed that they submitted the information to the guide for their respective candidates.  So, if there is a mistake, it is likely on the part of the Kiffmeyer campaign.  But if that is the case, why the very specific answer that she moved back to Minnesota when she was 4 and why “back?”

More as this develops…