Removed Steam Games?

Why did you give away the Reality Studio Pack as City of Chains? That's bugged and the points you get for it will drop again and you will only get cv for City of Chains.

CV is never permanent, if you give away an title worth 60$ you're also loosing the CV if the game gets a price change in the store in the future.

If the game is purchased disabled then 0. Steam returns a value of 0 in this case, and any attempt to override it will be undone once the site fetches the most recent data.

If the game is removed (i.e. no Store Page) then it will be purged from the giveaway list, but it can be re-added at it's last known value manually. Since Steam does not acknowledge the game's existence, we don't have to worry about the value of the game being altered every time the site is updated.
Only Mods+ can do this so don't ask me to do it here D:

If it has a store page, you'll get 0 value. Unless, you can create a support ticket to get a reasonible custom value.