If I well remember this contract is installed by Eidete. So, since Eidete won't be in Luna, this bug is not valid for elementary OS. Also, this is not a bug of Files.
I think the "save" option should be hardcoded and not depend on Contractor. First, Eidete should be useful even without Contractor and second, "save as" doesn't make a great contract either way.
If I well remember this contract is installed by Eidete. So, since Eidete won't be in Luna, this bug is not valid for elementary OS. Also, this is not a bug of Files.