well, i got your point. still, another example:
Lividity - Fetish For The Sick was released on Ablated Records in 1997 and re-released on Comatose Music in 2004 with bonuses, number coma 009. I've got re-issue CD. And it would be stupid if it looked like this:

Label: Ablated Records
Number: coma009

I guess, it would be more logical to have Original Label and Year fields...