Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
CompactionArea: what it touches
Internal ChangesKind: in v2.1.292,
Internal ChangesSection of the release
Unclear What this changes for a resumed session is not stated.
What
Compaction is when Claude Code replaces older parts of a long conversation with a summary. The compaction result marks where the summary sits with a resolution of after_summary.
That marker is now set together with keptRows, the number of rows of conversation kept after the summary. It is set whenever the relevant cut point exists. Before, the marker was set under a different condition and carried no keptRows.
When you rewind to a point inside summarized history, the usage record sent for that rewind now includes kept_rows (e.cut.keptRows ?? 0). Before, it carried no details.
Why
The compaction change can affect how a session picks up again after it was compacted. The rewind change only adds a number to the usage data Claude Code reports and does not change what you see.
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat this changes for a resumed session is not stated.
