---
id: duplicates.what-happens-if-files-changed-since-the-duplicate-scan
url: https://storagestudio.us/faq/duplicates/what-happens-if-files-changed-since-the-duplicate-scan
category: "Duplicate files"
subcategory: "Removing and restoring duplicates"
question: "What happens if my files changed since the last duplicate scan?"
alt_questions:
  - "Are duplicate results checked again before removing?"
  - "The copy you're keeping couldn't be verified, so nothing was removed"
  - "Stale duplicate results"
  - "I moved a file after the scan — is it safe to clean?"
  - "Duplicate removal failed after reorganising"
short_answer: "Storage Studio re-checks the copy you're keeping right before removing anything. If it has moved or can't be read, nothing is removed and you're asked to scan again, so an out-of-date result can never cost you the last copy."
tags: ["duplicates", "safety", "scan"]
related: ["https://storagestudio.us/faq/duplicates/are-duplicate-results-remembered-between-launches", "https://storagestudio.us/faq/duplicates/will-removing-duplicates-delete-my-files"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# What happens if my files changed since the last duplicate scan?

Storage Studio re-checks at the moment of removal, so an out-of-date result can't cost you the last copy. On your Mac, the copy you're keeping must still be present and readable; if it isn't, nothing is removed and you'll see *"The copy you're keeping couldn't be verified, so nothing was removed."*

In a cloud account, the kept copy is checked in the account itself just before anything is removed; if it has gone, you'll see that nothing was removed and you should scan again.

If you've reorganised a lot since the scan, click **Scan now** for a fresh list before cleaning.