Here's what you'll need to replace the non-single versions on Singles:
Confusion 7" edit -- rip it from the video.
Blue Monday 7" -- wasn't released in the UK, so don't worry about it.
The Perfect Kiss 7" -- I'm not sure whether the UK 7" and the version on Singles (and Best Of and Low-life) are the same or not; Benelux had a different 7" edit.
BLT 7" -- on the U.S. CD single
True Faith 7" -- kinda tricky. The video has an edit but I don't think it's the same edit as the UK 7". The U.S. promo CD single has it, I think, as well as the Morning Sun Remix Edit that was the 7" mix in the U.S.
1963 1995 Arthur Baker radio edit -- on the first UK CD single or the U.S. Best Of.
Round and Round 7" -- I haven't bothered to listen for the tiny differences that would confirm whether Singles has the original 1989 7" mix or the 1994 cleaned up version. (There are differences in the chorus overdubbing, iirc.)
Run 2 7" -- rip from the video.
Regret 7" -- slightly edited from the album version; don't have it myself, but it's on various radio promos.
Spooky edit -- as mentioned in an earlier post, technically the Minimix seems to be the UK radio version.
Quite possibly Turn won't be released as a single, so a pure singles collection might not include it. Also, Procession / EGG isn't really a double a-side, I don't think, so only one should be on the set -- Procession, if my recollections of the matrix numbers are correct.
Fun facts apropos of nothing: the 1963 video mix is not quite the same as the Arthur Baker radio mix; the former is a little longer. And the video version of "World in Motion" is several seconds shorter than the 7" mix.