diff --git a/src/platform/packages/shared/kbn-object-utils/src/unflatten_object.test.ts b/src/platform/packages/shared/kbn-object-utils/src/unflatten_object.test.ts
index 5d15ba2ca779a..f8472b8b92366 100644
--- a/src/platform/packages/shared/kbn-object-utils/src/unflatten_object.test.ts
+++ b/src/platform/packages/shared/kbn-object-utils/src/unflatten_object.test.ts
@@ -51,4 +51,40 @@ describe('unflattenObject', () => {
       },
     });
   });
+
+  it('handles nested arrays', () => {
+    expect(
+      unflattenObject({
+        nested: [[{ 'first.second': 'foo' }, { 'first.second': 'bar' }]],
+        mixed: [[1, 2, { 'first.second': 'foo' }]],
+      })
+    ).toEqual({
+      nested: [[{ first: { second: 'foo' } }, { first: { second: 'bar' } }]],
+      mixed: [[1, 2, { first: { second: 'foo' } }]],
+    });
+  });
+
+  it('unflattens nested flattened objects', () => {
+    expect(
+      unflattenObject({
+        'my.flattened.parent.key': {
+          'an.internal.key': 1,
+        },
+      })
+    ).toEqual({
+      my: {
+        flattened: {
+          parent: {
+            key: {
+              an: {
+                internal: {
+                  key: 1,
+                },
+              },
+            },
+          },
+        },
+      },
+    });
+  });
 });
diff --git a/src/platform/packages/shared/kbn-object-utils/src/unflatten_object.ts b/src/platform/packages/shared/kbn-object-utils/src/unflatten_object.ts
index d32f0c13bbeff..e6319bf8bdd88 100644
--- a/src/platform/packages/shared/kbn-object-utils/src/unflatten_object.ts
+++ b/src/platform/packages/shared/kbn-object-utils/src/unflatten_object.ts
@@ -18,13 +18,18 @@ export function unflattenObject<T extends Record<string, any>>(
   for (const key in source) {
     const val = source[key as keyof typeof source];
     if (Array.isArray(val)) {
-      const unflattenedArray = val.map((item: unknown) => {
-        if (item && typeof item === 'object' && !Array.isArray(item)) {
+      const unflattenedArray = val.map(function unflattenArray(item: unknown): unknown {
+        if (Array.isArray(item)) {
+          return item.map(unflattenArray);
+        }
+        if (item !== null && typeof item === 'object') {
           return unflattenObject(item);
         }
         return item;
       });
       set(target, key, unflattenedArray);
+    } else if (val !== null && typeof val === 'object') {
+      set(target, key, unflattenObject(val));
     } else {
       set(target, key, val);
     }
diff --git a/x-pack/solutions/observability/packages/utils-common/moon.yml b/x-pack/solutions/observability/packages/utils-common/moon.yml
index ef3a8d9caf433..d232998d84b11 100644
--- a/x-pack/solutions/observability/packages/utils-common/moon.yml
+++ b/x-pack/solutions/observability/packages/utils-common/moon.yml
@@ -19,8 +19,6 @@ project:
     sourceRoot: x-pack/solutions/observability/packages/utils-common
 dependsOn:
   - '@kbn/es-query'
-  - '@kbn/safer-lodash-set'
-  - '@kbn/utility-types'
 tags:
   - shared-common
   - package
diff --git a/x-pack/solutions/observability/packages/utils-common/object/unflatten_object.test.ts b/x-pack/solutions/observability/packages/utils-common/object/unflatten_object.test.ts
deleted file mode 100644
index aa25821b4ac14..0000000000000
--- a/x-pack/solutions/observability/packages/utils-common/object/unflatten_object.test.ts
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License
- * 2.0; you may not use this file except in compliance with the Elastic License
- * 2.0.
- */
-
-import { unflattenObject } from './unflatten_object';
-
-describe('unflattenObject', () => {
-  it('unflattens deeply nested objects', () => {
-    expect(unflattenObject({ 'first.second.third': 'third' })).toEqual({
-      first: {
-        second: {
-          third: 'third',
-        },
-      },
-    });
-  });
-
-  it('does not unflatten arrays', () => {
-    expect(
-      unflattenObject({
-        simpleArray: ['0', '1', '2'],
-        complexArray: [{ one: 'one', two: 'two', three: 'three' }],
-        'nested.array': [0, 1, 2],
-        'complex.nested': [{ one: 'one', two: 'two', 'first.second': 'foo', 'first.third': 'bar' }],
-      })
-    ).toEqual({
-      simpleArray: ['0', '1', '2'],
-      complexArray: [{ one: 'one', two: 'two', three: 'three' }],
-      nested: {
-        array: [0, 1, 2],
-      },
-      complex: {
-        nested: [{ one: 'one', two: 'two', first: { second: 'foo', third: 'bar' } }],
-      },
-    });
-  });
-
-  it('handles null values correctly', () => {
-    expect(
-      unflattenObject({
-        'agent.name': null,
-      })
-    ).toEqual({
-      agent: {
-        name: null,
-      },
-    });
-  });
-});
diff --git a/x-pack/solutions/observability/packages/utils-common/object/unflatten_object.ts b/x-pack/solutions/observability/packages/utils-common/object/unflatten_object.ts
deleted file mode 100644
index 88eb9003f5327..0000000000000
--- a/x-pack/solutions/observability/packages/utils-common/object/unflatten_object.ts
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License
- * 2.0; you may not use this file except in compliance with the Elastic License
- * 2.0.
- */
-
-import { set } from '@kbn/safer-lodash-set';
-import type { DedotObject } from '@kbn/utility-types';
-
-export function unflattenObject<T extends Record<string, any>>(
-  source: T,
-  target: Record<string, any> = {}
-): DedotObject<T> {
-  // eslint-disable-next-line guard-for-in
-  for (const key in source) {
-    const val = source[key as keyof typeof source];
-    if (Array.isArray(val)) {
-      const unflattenedArray = val.map((item: unknown) => {
-        if (item && typeof item === 'object' && !Array.isArray(item)) {
-          return unflattenObject(item);
-        }
-        return item;
-      });
-      set(target, key, unflattenedArray);
-    } else {
-      set(target, key, val);
-    }
-  }
-
-  return target as DedotObject<T>;
-}
diff --git a/x-pack/solutions/observability/packages/utils-common/tsconfig.json b/x-pack/solutions/observability/packages/utils-common/tsconfig.json
index 2ba42d09bb015..29ece47c5142b 100644
--- a/x-pack/solutions/observability/packages/utils-common/tsconfig.json
+++ b/x-pack/solutions/observability/packages/utils-common/tsconfig.json
@@ -17,7 +17,5 @@
   ],
   "kbn_references": [
     "@kbn/es-query",
-    "@kbn/safer-lodash-set",
-    "@kbn/utility-types",
   ]
 }
diff --git a/x-pack/solutions/observability/plugins/observability_ai_assistant_app/moon.yml b/x-pack/solutions/observability/plugins/observability_ai_assistant_app/moon.yml
index 5ca075498b206..610cac0c4bc43 100644
--- a/x-pack/solutions/observability/plugins/observability_ai_assistant_app/moon.yml
+++ b/x-pack/solutions/observability/plugins/observability_ai_assistant_app/moon.yml
@@ -93,6 +93,7 @@ dependsOn:
   - '@kbn/zod'
   - '@kbn/connector-schemas'
   - '@kbn/onechat-plugin'
+  - '@kbn/object-utils'
 tags:
   - plugin
   - prod
diff --git a/x-pack/solutions/observability/plugins/observability_ai_assistant_app/scripts/evaluation/read_kibana_config.ts b/x-pack/solutions/observability/plugins/observability_ai_assistant_app/scripts/evaluation/read_kibana_config.ts
index 66fb66bf06aeb..76f3affd9b18e 100644
--- a/x-pack/solutions/observability/plugins/observability_ai_assistant_app/scripts/evaluation/read_kibana_config.ts
+++ b/x-pack/solutions/observability/plugins/observability_ai_assistant_app/scripts/evaluation/read_kibana_config.ts
@@ -9,7 +9,7 @@ import path from 'path';
 import fs from 'fs';
 import yaml from 'js-yaml';
 import { identity, pickBy } from 'lodash';
-import { unflattenObject } from '@kbn/observability-utils-common/object/unflatten_object';
+import { unflattenObject } from '@kbn/object-utils';
 
 export type KibanaConfig = ReturnType<typeof readKibanaConfig>;
 
diff --git a/x-pack/solutions/observability/plugins/observability_ai_assistant_app/tsconfig.json b/x-pack/solutions/observability/plugins/observability_ai_assistant_app/tsconfig.json
index edb4c5b8b94eb..cd787da034a33 100644
--- a/x-pack/solutions/observability/plugins/observability_ai_assistant_app/tsconfig.json
+++ b/x-pack/solutions/observability/plugins/observability_ai_assistant_app/tsconfig.json
@@ -88,7 +88,8 @@
     "@kbn/utility-types-jest",
     "@kbn/zod",
     "@kbn/connector-schemas",
-    "@kbn/onechat-plugin"
+    "@kbn/onechat-plugin",
+    "@kbn/object-utils",
   ],
   "exclude": ["target/**/*"]
 }