Imatch Update Upload file

Hi,

I came across an oddity in match. I found that two uploaded tracks from Tangerine Dreams Under Cover CD had their kind and bit rate changed from MP3 / 320 Kbps to Matched AAC / 256 Kbps. I cloud status still "Uploaded". I deleted 256 kpbs tracks and redownloaded. Despite suggesting that I was going to download the original MP3 file, the matched one was downloaded instead.

All tracks were purchased directly from TD site and were uploaded as they were not available in Itunes store at the time . They are now available in the store

Does any one know why this should happen?

PS all tracks on disc showed same modification date but kind remained as MP3.

Jim