Ok I found a far easier/quicker way to import your contacts back from your exported contacts, all those pesky .vcf files.

Unfortunately the second step being importing through a file manager doesn't seem to work properly pre PR1.2, definitely not on PR1.1 and it's probably the same on PR1.0. Pre 1.2 it will only show the first contact instead of listing them all.
The merging of your contacts into one .vcf file still does work if that has any benefits.

Once you've exported your contacts to file, they are automatically saved to MyDocs/Contacts, or say if you've copied your contact folder back onto your N9, I'd recommend copying them back there to keep the following terminal code the same.
You may want to make an extra backup copy of your contacts folder but this should be safe enough.

You'll need to activate developer mode to access the terminal, well its an easy way at least.

Open terminal and enter the following:

And voila, all your contacts are in one single .vcf file called allcontacts.vcf, it's located in the same contacts folder, now you can open allcontacts.vcf from a file manager like filebox, mark all, then import.

Done, your welcome.