User blog comment:Legionwrex/Multiplayer to have an impact on Story?/@comment-743796-20120120030340

That doesn't make sense... how can multiplayer characters be imported into the campaign when they're completely different? The only thing that can be imported is the progress achieved during those missions, though as BioWare mentioned before, one doesn't need to play the multiplayer or co-op missions to achieve the same endings, just it'll take longer to do so without them.