diff --git a/packages/core/src/context/migration-plan.md b/packages/core/src/context/migration-plan.md
index 89b074ba51..168ddb0feb 100644
--- a/packages/core/src/context/migration-plan.md
+++ b/packages/core/src/context/migration-plan.md
@@ -17,16 +17,16 @@
   - [x] Update `executePipeline` and `executeTriggerSync` to act as a reducer.
   - [x] Map `ContextPatch` results onto the flat Ship array.
 
-- [ ] **Phase 4: Pristine Graph & Mapping (`contextManager.ts` & `ir/toIr.ts`)**
-  - [ ] Update `toIr` to produce a flat list of `ConcreteNode`s and a tree of
+- [x] **Phase 4: Pristine Graph & Mapping (`contextManager.ts` & `ir/toIr.ts`)**
+  - [x] Update `toIr` to produce a flat list of `ConcreteNode`s and a tree of
         `LogicalNode`s.
-  - [ ] Make `ContextManager` track the Pristine Graph and instantiate the flat
+  - [x] Make `ContextManager` track the Pristine Graph and instantiate the flat
         Ship.
-  - [ ] Commit patches to the Pristine Graph history.
+  - [x] Commit patches to the Pristine Graph history.
 
-- [ ] **Phase 5: The Walker (`ir/projector.ts`)**
-  - [ ] Update projection to simply walk the flat `ReadonlyArray<ConcreteNode>`.
-  - [ ] Skip nodes whose IDs are in a "skipped" set (based on `abstractsIds`).
+- [x] **Phase 5: The Walker (`ir/projector.ts`)**
+  - [x] Update projection to simply walk the flat `ReadonlyArray<ConcreteNode>`.
+  - [x] Skip nodes whose IDs are in a "skipped" set (based on `abstractsIds`).
 
 - [ ] **Phase 6: Refactoring Processors**
   - [ ] `ToolMaskingProcessor`