diff --git a/src/init.mjs b/src/init.mjs
index 32defc8..b0d8a79 100644
--- a/src/init.mjs
+++ b/src/init.mjs
@@ -1417,9 +1417,10 @@ export function deriveUserConfig(
     enabledRuntimes: additive ? [...new Set([...(derived.init?.enabledRuntimes ?? []), ...runtimeIds])] : runtimeIds,
     keepWarmRuntime: additive ? null : keepWarm,
     additive,
-    ...(recipesRoot ? { recipesRoot } : {}),
-    ...(benchmarksRoot ? { benchmarksRoot } : {}),
-    ...(backendCatalogPath ? { backendCatalogPath } : {})
+    // This run's sources replace the previous init's: recipeId is only valid in its own root.
+    recipesRoot: recipesRoot || undefined,
+    benchmarksRoot: benchmarksRoot || undefined,
+    backendCatalogPath: backendCatalogPath || undefined
   };
   return preserveEnvBackedSecrets(derived, sourceTemplate);
 }
diff --git a/test/hear-recipe.test.mjs b/test/hear-recipe.test.mjs
index 7eedc47..cefa6c7 100644
--- a/test/hear-recipe.test.mjs
+++ b/test/hear-recipe.test.mjs
@@ -59,4 +59,18 @@ assert.match(next.backends.hear.baseUrl, /^http:\/\/127\.0\.0\.1:\d+\/v1$/);
 assert.deepEqual(next.aliases.hear.members, ['hear']);
 assert.deepEqual(next.aliases.listen.members, ['hear']);
 
+// An additive init from the default recipes must not inherit an earlier init's
+// sources, or `lloom status` resolves the new recipeId in the old recipes root.
+const staleSources = {
+  recipesRoot: '/stale/recipes',
+  benchmarksRoot: '/stale/benchmarks',
+  backendCatalogPath: '/stale/backends.json'
+};
+const restacked = await createInitPlan(
+  { ...config, init: { recipeId: 'spark03-cuda-media', ...staleSources } },
+  { recipeId: 'lloom-hear', additive: true, modelRoot: '/tmp/lloom-models' }
+);
+assert.equal(restacked.config.init.recipeId, 'lloom-hear');
+for (const key of Object.keys(staleSources)) assert.equal(restacked.config.init[key], undefined, key);
+
 console.log('hear-recipe tests passed');