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[Work in progress] wiki layout needs to get better, 1st time I'm doing this :)
migrate your contacts from Maemo (potentially also Harmattan, to be verified by someone with an N9)
export your contacts to a file (on the Maemo side) (as per TMO source)
osso-addressbook-backup -e contacts.vcard
copy the file to the Nemo side:
sudo cp contacts.vcard /media/mmc1p1/home/nemo
reboot into Nemo
(possibly) change filerights for the contacts.vcard file to 755 (chmod 755 contacts.vcard)
and use the People - Import function to point to the contacts.vard file. And it should be ok.