diff --git a/apps/examples/src/pages/collection.tsx b/apps/examples/src/pages/collection.tsx
index 7d495e5c..41991f77 100644
--- a/apps/examples/src/pages/collection.tsx
+++ b/apps/examples/src/pages/collection.tsx
@@ -28,6 +28,7 @@ const INITIAL_VALUES = {
     { company: "Initial Company (1)" },
     { name: "Initial Name (2)", company: "Initial Company (2)" },
   ],
+  conditioned: ["Initial value (1)", "Initial value (2)"],
 };
 
 type FormValues = any;
@@ -290,7 +291,7 @@ const Collection = () => {
 
 const ConditionedCollection = () => {
   const conditionedCollection = useCollection("conditioned", {
-    defaultValue: ["default value"],
+    defaultValue: ["Default value"],
   });
 
   return (
diff --git a/packages/formiz-core/src/store.ts b/packages/formiz-core/src/store.ts
index 6162f3f8..c46fa289 100644
--- a/packages/formiz-core/src/store.ts
+++ b/packages/formiz-core/src/store.ts
@@ -730,17 +730,16 @@ export const createStore = <Values extends object = DefaultFormValues>(
             isPristine: oldCollectionById?.isPristine ?? true,
           });
 
-          let newInitialValues = state.initialValues;
           let newExternalValues = state.externalValues;
-
-          if (Array.isArray(initialValues) && isArrayEmpty(initialValues)) {
-            newInitialValues =
-              omitValueByFieldName(newInitialValues, newCollection.name) ?? {};
-          }
           if (Array.isArray(externalValues) && isArrayEmpty(externalValues)) {
             newExternalValues =
               omitValueByFieldName(newExternalValues, newCollection.name) ?? {};
           }
+          let newInitialValues = state.initialValues;
+          if (Array.isArray(initialValues) && isArrayEmpty(initialValues)) {
+            newInitialValues =
+              omitValueByFieldName(newInitialValues, newCollection.name) ?? {};
+          }
 
           return {
             collections: state.collections,
diff --git a/packages/formiz-core/src/useField.ts b/packages/formiz-core/src/useField.ts
index 15069d8b..b35f683b 100644
--- a/packages/formiz-core/src/useField.ts
+++ b/packages/formiz-core/src/useField.ts
@@ -44,7 +44,7 @@ export const useField = <
     required: false,
     validations: [],
     validationsAsync: [],
-    formatValue: (v) => v as FormattedValue, // TODO: replace as
+    formatValue: (v) => v as FormattedValue,
     ...config,
   };
   const configRef = useRef(_config);
diff --git a/packages/formiz-core/src/utils/form.ts b/packages/formiz-core/src/utils/form.ts
index f0b8c4c8..43215736 100644
--- a/packages/formiz-core/src/utils/form.ts
+++ b/packages/formiz-core/src/utils/form.ts
@@ -13,6 +13,7 @@ import type {
 } from "@/types";
 import { isObject } from "@/utils/global";
 
+import lodashSet from "lodash/set";
 import lodashIsEmpty from "lodash/isEmpty";
 import cloneDeep from "lodash/cloneDeep";
 import lodashGet from "lodash/get";
@@ -84,6 +85,18 @@ export const omitValueByFieldName = <Values = any>(
   if (!values || lodashIsEmpty(values)) {
     return undefined;
   }
+
+  const isArraySyntax = fieldName.match(/\[([0-9]*)\]$/g);
+  if (isArraySyntax) {
+    // To manage case of collection where typeof collection[index] === "string" and the case of omit remove an item of the array
+    const currentValue = parseValues(cloneDeep(values));
+
+    // If there is a value, we replace it by undefined instead of remove item
+    return lodashGet(currentValue, fieldName)
+      ? lodashSet(currentValue, fieldName, undefined)
+      : currentValue;
+  }
+
   return lodashOmit(
     parseValues(cloneDeep(values)),
     fieldName