I PMed you at VGMaps.com, bustin. Didn't see your Wii number there, oops. LOL, it begins with a 360.
Anyway, decoyman, to confirm the "copying" that the sending really is, I remember that on the second or third day with my Wii I went into the Mii Parade and saw a Mii of my friend Miyuru (he claims to be an Internet legend, I guess he's "famous" on GAF or something) and took him to my own Mii Plaza. Then I deleted him and freaked out that I no longer saw him in the parade, however, I saw that his brother was there and assumed that I was able to delete other people's Miis (even though that would be dumb). Turns out that wasn't the case...I'm guessing WiiConnect24 didn't connect and didn't update the fact that he was actually still there. Later, he sent himself back to me, instead of having me grabbing him from the Parade, if that makes a difference.
EDIT: 50-60 people? Holy smokes! Yeah, I'm guessing they're (or the copies of them are) actually lost, I haven't heard of them keeping a queue of incoming Miis.