Talk:To Where and Back Again - Part 1/@comment-25003213-20161030142408/@comment-4531340-20161031095856

As was said in the episode (although I didn't realize it until a couple rewatches), the changelings only replaced the Mane Six, Spike, the Princesses (Celestia, Luna, Cadance, and Flurry Heart), and Shining Armor. The other ponies seem to have been left alone (Chrysalis's plan is stated to have been to take the love being directed at those beloved Equestrian figures by other Equestrian ponies, and use that to feed on), which makes sense because 1) it would make no sense for the changelings to feed off their own love, and 2) we only see those particular characters (in addition to Trixie and Discord, since they're captured during the events of the finale) being freed from those cocoons at the end, as well as being suspended in them in the first place.

Plus, from Thorax's dialogue toward the end of this part, he makes it sound like Sunburst wasn't replaced (which, if that is the case, may well be a similar thing to Starlight's case, where Chrysalis didn't see a need for a changeling replacement in that particular case)