{"version":"2.1.317","anchor":"compaction-drops-stale-instructions-attachments-from-prese","canonical_anchor":"compaction-drops-stale-instructions-attachments-from-prese","heading":"Compacting a conversation no longer keeps older copies of instructions","tier":"notice","area":"Compaction","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.317\/e\/compaction-drops-stale-instructions-attachments-from-prese","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.317","markdown":"### Compacting a conversation no longer keeps older copies of instructions\n\nWhen Claude Code compacts a long conversation, it now drops instruction attachments from before a cutoff in the messages it keeps\n\n**What**\n\nCompaction is what Claude Code does when a conversation gets too long: it summarises older parts and keeps some recent messages as they are. Some messages carry attached instructions, which are extra text Claude Code adds alongside a message to guide Claude.\n\nWhen compaction happens in response to a conversation running out of room, Claude Code now drops instruction attachments that come before a certain point in the kept messages. It keeps the ones at or after that point. Before, every kept message went through unchanged.\n\n**Why**\n\nThe same instructions no longer appear twice after compaction, so they take up less of the room Claude has for the conversation.\n\n- Area: Compaction\n- Tier: You'll notice\n- Useful: 2\/5\n- Signal: 2\/5\n- Scope: individual\n- Heads-up: no"}