Duplicate files · Removing and restoring duplicates
Can removing a duplicate break something that used that copy?
Short answer: Occasionally, if an app or project pointed at the exact copy you removed. Storage Studio favours keeping the copy in your working folder or the one used most recently, and skips developer folders. If something breaks, restore the copy from the Recycle Vault to its original place.
It can, occasionally — an app or project may point at one particular copy by its location, and removing that copy leaves it looking in the wrong place. That's why Storage Studio recommends keeping the copy in your working folder, or the one you used most recently, and why developer folders (such as Git repositories and build folders) aren't scanned at all.
If something can't find a file after a clean-up, restore the removed copy from the Recycle Vault — it goes back to exactly where it was. When in doubt, open each copy's folder before removing it.