Complete My Album and older purchases no longer showing as purchased

I have noticed that on many of my older single song purchases, I do not have the option to complete the album (but on others I do so it isnt some account issue).

It seems that for whatever reason, some albums get re encoded and re uploaded. When that happens they delete the old version from the store but leave it on their servers and your previously purchased songs are still attached to the old no longer available for purchase version. They dont migrate your purchases over to their new replaced version (were talking same exact album here, not a newer extended version or something)

You can re download them from the cloud no problem, but when you view the album in the store, it doesnt show any purchased tracks. If you re purchase one of those tracks it now shows in the cloud that you own it twice. (the album are will usually have slightly different coloring from being rescanned) I downloaded them both and the size was a bit different, the newer one even had a slightly higher bitrate.

Just figured id post this here for anyone not able to complete an album and thinking there is an issue. You can test it by deleting the item from the cloud (it just hides it) then going into the itunes store account area and going to the manage your hidden tracks area. If you sort by songs and click the album name, it will either take you to the album page or tell you that this album is not available in the US store (or whatever region you bought it in). If it says the latter, then you purchases are from an older encoding of that album.

I have no idea why they do it like this, its pretty rediculous and leads to a bunch of issues like the endless threads by confused people not knowing why they cant complete an album. Its because the album you bought a song from isnt for sale anymore, even though one with the same name and songs is.