Purpose: This guide explains how to identify and remove a single corrupted attachment version (without deleting the whole attachment) to restore your Excel-like table’s underlying data on Confluence Data Center.
Background
In this product, each Excel-like table is backed by attachment files stored on the page. Every saved change creates a new attachment version. If one version becomes corrupted, the Excel-like table may fail to load or display errors. You can safely remove only the corrupted version to roll back to the last healthy one.
Attachment naming convention: Excel-like table data is stored in files that follow the pattern table-xxxx.json, where xxxx is a numeric identifier.
Before you begin
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Ensure you have permission to view and manage attachments for the page.
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Back up the current attachment (download it) before making any changes.
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Proceed only if you can clearly identify the corrupted version. If unsure, contact support with a screenshot for guidance.
Best practice: Always download the latest attachment file before deleting any version. This provides a fail-safe if you remove the wrong version.
Identify the corrupted attachment version
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Open the Confluence page that hosts the Excel-like table.
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Go to the page’s attachments:
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Choose More actions (•••) > Attachments, or append
?page=attachmentsto the page URL (methods may vary by theme/permissions).
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Locate the Excel-like table data attachment named like
table-xxxx.json. -
Open Versions (or History) for that attachment to view all versions, sizes, and timestamps.
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Identify anomalies that commonly indicate corruption:
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Unusually small file size (for example, around 1 KB when prior versions are much larger).
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Sudden drastic size change compared to adjacent versions.
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Version after which the Excel-like table fails to load or errors appear.
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Back up before deletion
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From the Versions/History view, download:
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The latest healthy version (based on size/pattern), and optionally the suspicious version as evidence for support.
Keep the backups until you fully confirm the Excel-like table loads correctly after cleanup.
Remove the corrupted attachment version
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In the attachment’s Versions/History view, find the specific corrupted version you identified earlier.
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Use Delete (or Remove) for that exact version only. Do not delete the entire attachment unless instructed by support.
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Confirm the deletion when prompted.
Validate the Excel-like table
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Return to the page and reload the Excel-like table macro/view.
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Confirm data renders correctly and that recent edits (up to the last healthy version) are intact.
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If issues persist, consider removing the next suspicious version, or restore from the backup you downloaded and contact support.
Troubleshooting and tips
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If multiple
table-xxxx.jsonfiles exist, match by the macro/page context and recent edit time to avoid touching unrelated data. -
Do not bulk-delete. Remove only the single confirmed corrupted version, then re-check the sheet.
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If you cannot access Attachments from page actions, check space/page permissions or ask an administrator [Add Space Admin].
Request support
If you are unsure which version to delete, or the issue persists after cleanup, contact our Support team. Include:
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A screenshot of the attachment Versions/History list showing sizes and version numbers.
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The page link and a brief description of what happened immediately before the issue.
Open a ticket via: https://support.example.com/submit (attach your screenshots and backups).