Falchion Weapon Refine

I was going to submit a build for Masked Marth on the site but it looks like the Falchion refines wrong for her and the other Falchion users, it doesn't show that they can get Sealed Falchion (Chrom, Masked Marth and Lucina) and for some reason it says they can get the Shadow Dragon and Echoes Falchion refine too. Didn't know where else to post this on the site so thought I'd post it here.