Requested feature overview description.
Currently, posts deleted as inferior inherit their favourites to the new, superior post. For consistency and other reasons, they should also inherit their upvotes and downvotes to the superior post as well.
Why would it be useful?
Upvotes affect user opinion in a way, even more than favourites. a green bolded number representing upvotes definitely changes the initial opinion of a piece over a normal number for favourites, which is useful for users who have never seen a piece, since while scrolling down, a big upvote count always says to a user; 'Stop and come look at me!'.
In relevancy to the current tumblr situation we have, lots of old posts are being reuploaded for superior versions, and I think therefore it is at least a little reasonable to assume that most longtime users would just skip past posts they've already seen, which could mean lost upvotes for reuploaded pieces, causing an image to not reach the same kind of success with new viewers as before.
And there is the issue of the use of order:score which arranges posts in terms of upvotes in a descending order. Without inheriting the upvotes, and assuming the above statements are actually true; posts that would have been seen more in these kinds of searches are just filtered to the bottom while objectively worse (in terms of upvotes) posts are filtered to the top. And as a side note to that, it also means that the same posts can't be found in the same spots using order:score, which may be a small problem with consistency.
With those factors in mind, it might be worth it to consider bringing upvotes over from posts deleted for inferiority. As it could have a real impact on how users engage with these old images that were potentially highly upvoted.
What part(s) of the site page(s) are affected?
Searching and viewing posts.
EDIT: https://e621.net/post/index/1/order:score%20bvats%20status:deleted%20ischild:true
using this search, you can see some posts that have high upvote counts don't get as many upvotes the second time around.
Updated by hslugs