Can't upload newer version.

Waves
A Really Classy Artist - 250+ images under their artist tag
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Not a Llama - Happy April Fools Day!
An Artist Who Rocks - 100+ images under his artist tag
Artist -

So I tried to upload an update. At first everything looked alright. image 1486048 and 1486065  
But then I had to notice that both are exactly the same. No of my fixes nor they change in resolution are there. And neither can I upload the file again because it apparently already exists, which is definitely wrong to me.
The Smiling Pony
Silly Pony - Celebrated the 13th anniversary of MLP:FIM, and 40 years of MLP!
Shimmering Smile - Celebrated the 10th anniversary of Equestria Girls!
Solar Hero - Went above and beyond for the Solar Deity, drawing from the power of the sun itself to bring balance to the fight against the Lunar Insurrection (April Fools 2023).
Roseluck - Had their OC in the 2023 Derpibooru Collab.
Flower Trio - Helped others get their OC into the 2023 Derpibooru Collab.
King Sombra - Celebrated the 10th anniversary of The Crystal Empire!
A Lovely Nightmare Night - Celebrated the 12th anniversary of MLP:FIM!
Princess of Love - Extra special version for those who participated in the Canterlot Wedding 10th anniversary event by contributing art.
Tree of Harmony - Drew someone's OC for the 2022 Community Collab
Elements of Harmony - Had an OC in the 2022 Community Collab

( ͠° ͟ʖ ͡° )
Were you uploading a file from your machine or from DA?
 
If the former, was the field with the “Fetch” button on the right empty? If it’s not, the site will upload both sequentially, replace the first file with the second, and the file hash for both.
The Smiling Pony
Silly Pony - Celebrated the 13th anniversary of MLP:FIM, and 40 years of MLP!
Shimmering Smile - Celebrated the 10th anniversary of Equestria Girls!
Solar Hero - Went above and beyond for the Solar Deity, drawing from the power of the sun itself to bring balance to the fight against the Lunar Insurrection (April Fools 2023).
Roseluck - Had their OC in the 2023 Derpibooru Collab.
Flower Trio - Helped others get their OC into the 2023 Derpibooru Collab.
King Sombra - Celebrated the 10th anniversary of The Crystal Empire!
A Lovely Nightmare Night - Celebrated the 12th anniversary of MLP:FIM!
Princess of Love - Extra special version for those who participated in the Canterlot Wedding 10th anniversary event by contributing art.
Tree of Harmony - Drew someone's OC for the 2022 Community Collab
Elements of Harmony - Had an OC in the 2022 Community Collab

( ͠° ͟ʖ ͡° )
@Don_Parpan  
Should be here now, >>1486883
 
And yes, using another browser after the error occurred wouldn’t have helped as the hash would’ve already been saved. In general when uploading or commenting (here or anywhere) it’s advisable to not use the back button or various clone/dupe tag functions, as those can save or not save certain data in way that’s not visible to the user (and can confuse the site you’re using).
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