Is this re-dubbed on the new 'Many Adventures' DVD or not?

As a bonus feature of the "Friendship Edition" of "The Many Adventures of Winnie-the-Pooh", I noticed that the cast list of "A Day For Eeyore" was slightly different. Laurie Main (The Narrator), Hal Smith (Owl, as he had been in the first two "Pooh" shorts, and also Pooh, orig. voiced by Sterling Holloway), and Ralph Wright, John Fiedler, and Paul Winchell (the original voices of Eeyore, Piglet, and Tigger) were included, but the names Will Ryan (Rabbit, orig. voiced by Junius Matthews), Kim Christianson (Christopher Robin, orig. voiced by Bruce Reitherman, Jon Walmsley, and Timothy Turner), Julie McWhirter-Dees (Kanga, orig. voiced by Barbara Luddy), and Dick Billingsley (Roo, orig. voiced by Clint Howard, Dori Whitaker) are replaced. The only names I can remember are Ken Sansom (for Rabbit, I think), Jim Cummings (most definitely for The Bear himself), and Tress MacNeille (Kanga perhaps, though Kath Soucie currently did her voice).
However, watching this DVD version I saw no differences in any voices in comparison to the 1983 version. (Example: If they had used a recent little kid to do Roo's voice, wouldn't it sound a little different from a young Dick Billingsley's back in the '80s?) On the other hand, I know Jim Cummings as Pooh is a dead ringer for Sterling Holloway, one almost couldn't tell them apart. But in WTPAADFE, Hal Smith takes over Holloway's vocals and does a pretty good imitation as well. So if that IS Jim Cummings' voice redubbed in this DVD version, is he impersonating Hal Smith impersonating Sterling Holloway's Winnie-the-Pooh voice? And if these other current voice actors/-tresses actually did redub their voices, I was completely fooled because they did a darn good job of sounding just like the originals. ?:(