A sync-conflict copy of a password database may hold an entry that the normal copy lacks. It may also contain a deletion you did not intend to apply. Preserve both encrypted files before attempting to consolidate them; the newer filename alone does not establish the correct credential set.

For KeePassXC 2.7.11, first prepare copies outside the active synchronisation location. Identify which copy will receive the trial merge and which will supply changes. Keep the untouched originals available and prevent other edits to the database while deciding the accepted result.

Understand what the merge compares

Database, Merge From Database imports into the open database. Matching entry UUIDs are reconciled by modification time, regardless of group; the newer version becomes current and the older enters history. New entries and groups are added. Recorded deletions can remove matching UUIDs without prompting, so merging is not merely adding missing rows.

Write a small reconciliation list using entry titles or another non-secret identifier. Include an item changed only in the first copy, one changed only in the second, one with competing edits and one deliberately deleted. Keep credential values out of this working list.

Inspect why the competing entry changed. A newer timestamp might describe a corrected note rather than the most recently accepted password. Establish what must survive before choosing a merge result, instead of treating a time-based choice as a business decision.

Review the trial before replacing the working file

Open the designated trial copy and merge from the preserved comparison copy. Inspect every item on the reconciliation list, including the deletion example. Check relevant history when a disputed value is no longer current. Do not assume two similarly titled entries share an identity or that matching totals prove the right content remains.

Retain the result as a separately identified candidate. Confirm that the entry used for a real account reflects its actual accepted state through the account owner's normal process; repeatedly trying historical passwords is not a useful validation method.

Only return an accepted candidate to the agreed working location after its contents and ownership are settled. Retain the comparison copies securely until the responsible user verifies the reconciled database. A quiet sync indicator then supports the handover, but the decisive check is the intended entries and changes surviving the merge.

Sources: Official documentation.