While Baroque Hoedown is indeed the underlining music for all of the floats in the Electrical Parade, it is a heavily modified verson of the original song. For instance, the melody and bass lines were by Don Dorsey re-recorded and played over the original track, leaving only some of the original percussion to bleed through. Also the "laser" sound effects were inserted.
Unfortunately, every release by Disney (save for the Paris releases) has included a stereo studio mix of Baroque Hoedown with only portions of the newly recorded stuff mixed in. This is true for both the single loop of Baroque Hoedown we get as the first cycle of every track, plus the underliner that accompanies each individual float track. I can only imagine that this is done to save for having to re-mix the entire parade in stereo for subsequent releases.
The Walt Disney World and Disneyland releases of the Electrical Parade (except for the current one for the DCA incarnation) use a track that I believe originated from a Don Dorsey promo disc released around 1987. An edited version of this track (removing some retired parade units) appeared on the Disneyland Fantasmic album, and (in abbreviated form) on the Disney 75 Years boxed set. This same track was also used for Walt Disney World's album in 1999 with only mono vocal tracks dubbed over (listen to the rear channels for the insertion points) and the Pinocchio and Return to Oz units removed from the mix.
The tracks heard on the Official Albums and the Japan MSEP singles are taken from the mix used for the old 1977 LPs. Yukky.
The Tokyo Disneyland Electrical Parade track was re-created specifically for the album. It contains more, but not all of the added Baroque Hoedown elements. It is the cleanest mix of the parade ever made, and was recycled for the DCA album.
Only the Paris releases of the Electrical Parade soundtrack are true to their actual park soundtracks. That's because these tracks are lifted directly from the parade units. Unfortunately, it makes for a mono and sometimes flat sounding CD.
I doubt we'll ever see any type of ultra mega remix of this parade. I think the time it would take to create such a track would be glazed over by most park souvenier buyers. If we could get our hands on some of the isolated elements we could probably make some great sounding mixes ourselves... unfortunately, those aren't available to us... yet.