I think you're a little confused as to what a metaphor and allegory are. I don't deny that such a story has meaning to us, but there is nothing in the text that indicates such an occurrence did not indeed actually happen. In fact, that's exactly how I interpret it....as a real occurrence. In that case, it is not metaphorical or allegorical.
I should have explained that I see it as metaphorical in this sense, that one does not have to be named "Lazarus," nor need one be sitting at someone's steps begging scraps with the dogs, covered with open sores, in order to find favor with God and reach Abraham's bosom (Heaven), and that one need not be rich, and one may not have a beggar at one's door that one ignores in order for one to end up in hades. In that sense, the parable teaches all of us, applies via the 'metaphors' mentioned above to all our lives. The story applies to all times, all places, and all persons by extension, and, IMO, the extension is seeing the specifics as metaphorical. Sorry I didn't state that clearly earlier. Thanks for the reply.