In this site’s discography, it is listed that Twelve-Inch Singles was released in 1985 and that “Halloween” 12’ was released in 1985 also, but are you sure that is correct?
I picked up Halloween no earlier than 1986, and I thought it was a new release at that time. Included in my copy is an insert which lists a bunch of Wax Trax! records available for mail-order. The catalogue number for Halloween is WAX020. The release for WAX016 is Front 242’s Interception. Interception was released by Nettwerk in 1986. According to the info at discogs.com, it was also released by Red Rhino in 1986, so I would assume that it was also released by Wax Trax! in 1986.
Granted that releases aren’t always chronological as well as numerical, here are a couple of other comparisons:
WAX017 - RevCo’s Big Sexy Land was also released 1986.
WAX022 - RevCo You Often Forget, 1986.
WAX026 - Front 242 Official Version, 1986.
WAX035 - Ministry Twelve-Inch Singles, 198? (don’t think it is 1985)
I’m pretty sure both Halloween 12" and Twelve-Inch Singles were released after Twitch, which is also why on Twitch, All Day is listed as “All Day Remix” because it is a remix of the original 12" version. It also explains why on Twelve-Inch Singles, there is “All Day (Remix B)” because Remix A is the Twitch version.
The various contributors at discogs.com agree with me that Halloween was released in 1986:
http://www.discogs.com/release/95625
and they list that the Twelve-Inch Singles was 1987:
http://www.discogs.com/release/36703
Thanks for the website and all the info it contains!
PS. Just a quick suggestion for the discography: you may want to use the internet standard country codes (eg. DE for Germany, FR - France …)