diff --git a/.yoi/tickets/open/20260608-103842-remove-legacy-ticket-schema-fields/item.md b/.yoi/tickets/open/20260608-103842-remove-legacy-ticket-schema-fields/item.md
index 39bf1744..531519ff 100644
--- a/.yoi/tickets/open/20260608-103842-remove-legacy-ticket-schema-fields/item.md
+++ b/.yoi/tickets/open/20260608-103842-remove-legacy-ticket-schema-fields/item.md
@@ -8,7 +8,7 @@ priority: 'P1'
 labels: ['ticket', 'schema', 'migration', 'cleanup']
 workflow_state: 'inprogress'
 created_at: '2026-06-08T10:38:42Z'
-updated_at: '2026-06-08T12:13:26Z'
+updated_at: '2026-06-08T12:17:50Z'
 assignee: null
 legacy_ticket: null
 queued_by: 'workspace-panel'
diff --git a/.yoi/tickets/open/20260608-103842-remove-legacy-ticket-schema-fields/thread.md b/.yoi/tickets/open/20260608-103842-remove-legacy-ticket-schema-fields/thread.md
index 06698600..d74b14dd 100644
--- a/.yoi/tickets/open/20260608-103842-remove-legacy-ticket-schema-fields/thread.md
+++ b/.yoi/tickets/open/20260608-103842-remove-legacy-ticket-schema-fields/thread.md
@@ -176,3 +176,20 @@ Needed decision before implementation continues:
 No merge, close, or implementation edits have occurred.
 
 ---
+
+<!-- event: decision author: orchestrator at: 2026-06-08T12:17:50Z -->
+
+## Decision
+
+Human decision received: delete `legacy_ticket` values even when non-null.
+
+Policy for this Ticket:
+- Treat existing non-null `legacy_ticket` frontmatter values as obsolete migration breadcrumbs rather than current relation authority.
+- Remove `legacy_ticket` from all current local Ticket `item.md` frontmatter, including closed historical Tickets and open Tickets.
+- Do not add a replacement generic external issue field in this Ticket.
+- Continue to keep historical thread/resolution prose intact unless a test fixture requires a narrow update.
+- The separate `typed-ticket-relation-metadata` Ticket remains the place to design durable typed relations if needed later.
+
+This resolves the implementation block and authorizes Coder to continue the schema cleanup.
+
+---