Mass-effect – If I import the ME3 Shepard into a new game, will the old save still be there

mass-effect-3

I have finished the game in ME3 and want to import this Shepard into a new game, will I still have the original finished ME3 save there to go back to?

I have finished the game on insanity but forgot to save Jack so need to go back and do that, but don't want to to the whole game again, I just want to get the achievement.
However, when the new DLC comes out with the extra bits on the end, I also don't want to have to redo the whole game just to see the extra ending.

Too scared to try it in case I stuff everything up

UPDATE: so I bit the bullet and started a new game with my original shep and all is fine. Still have the original, unchanged. I just now have 2 saves with the same name, but the date is different so that's how I can tell them apart.
You can also change your appearance if you want, I just altered the hair colour slightly just so I can have a little difference. Will also use different gear. You start with all your stuff and points and can really kick donkeys. Insanity is a breeze now. Thanks for the answers folks.

Best Answer

A Mass Effect 3 save will remain intact no matter how many times you import it. The original file will not be changed in any way.