diff --git a/CHANGELOG.md b/CHANGELOG.md
index 51c1241f1..b4fd08d93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,11 @@
     * Added `onPageAction`, `onPageTask`, `onPageAction.{$action}` and `onPageTask.{$task}` events
     * Added `Blueprint::processForm()` method to filter form inputs
     * Move `processMarkdown()` method from `TwigExtension` to more general `Utils` class
-
+1. [](#improved)
+    * Add method argument `Data::filter($missingValuesAsNull)`, defaulting to `false`
+1. [](#bugfix)
+    * Fixed `FlexForm::updateObject()` to update array values when they are empty in the form
+    
 # v1.6.0-beta.7
 ## 12/14/2018
 
diff --git a/system/src/Grav/Common/Data/Blueprint.php b/system/src/Grav/Common/Data/Blueprint.php
index 99793bfa4..f7c669ab2 100644
--- a/system/src/Grav/Common/Data/Blueprint.php
+++ b/system/src/Grav/Common/Data/Blueprint.php
@@ -119,13 +119,14 @@ class Blueprint extends BlueprintForm
      * Filter data by using blueprints.
      *
      * @param  array $data
+     * @param  bool $missingValuesAsNull
      * @return array
      */
-    public function filter(array $data)
+    public function filter(array $data, bool $missingValuesAsNull = false)
     {
         $this->initInternals();
 
-        return $this->blueprintSchema->filter($data);
+        return $this->blueprintSchema->filter($data, $missingValuesAsNull);
     }
 
     /**
diff --git a/system/src/Grav/Common/Data/Data.php b/system/src/Grav/Common/Data/Data.php
index 294a30746..e157e8167 100644
--- a/system/src/Grav/Common/Data/Data.php
+++ b/system/src/Grav/Common/Data/Data.php
@@ -196,12 +196,13 @@ class Data implements DataInterface, \ArrayAccess, \Countable, \JsonSerializable
     }
 
     /**
+     * @param bool $missingValuesAsNull
      * @return $this
      * Filter all items by using blueprints.
      */
-    public function filter()
+    public function filter(bool $missingValuesAsNull = false)
     {
-        $this->items = $this->blueprints()->filter($this->items);
+        $this->items = $this->blueprints()->filter($this->items, $missingValuesAsNull);
 
         return $this;
     }
diff --git a/system/src/Grav/Common/Data/Validation.php b/system/src/Grav/Common/Data/Validation.php
index f3a03f04e..62cb9fc9b 100644
--- a/system/src/Grav/Common/Data/Validation.php
+++ b/system/src/Grav/Common/Data/Validation.php
@@ -597,9 +597,13 @@ class Validation
 
         if (isset($field['ignore_empty']) && Utils::isPositive($field['ignore_empty'])) {
             foreach ($values as $key => $val) {
-                foreach ($val as $inner_key => $inner_value) {
-                    if ($inner_value == '') {
-                        unset($val[$inner_key]);
+                if ($val === '') {
+                    unset($values[$key]);
+                } elseif (\is_array($val)) {
+                    foreach ($val as $inner_key => $inner_value) {
+                        if ($inner_value === '') {
+                            unset($val[$inner_key]);
+                        }
                     }
                 }
 
@@ -751,15 +755,12 @@ class Validation
 
     protected static function filterInt($value, $params)
     {
-        return (int) $value;
+        return (int)$value;
     }
 
     public static function validateArray($value, $params)
     {
-        return \is_array($value)
-        || ($value instanceof \ArrayAccess
-            && $value instanceof \Traversable
-            && $value instanceof \Countable);
+        return \is_array($value) || ($value instanceof \ArrayAccess && $value instanceof \Traversable && $value instanceof \Countable);
     }
 
     public static function filterItem_List($value, $params)
diff --git a/system/src/Grav/Framework/Flex/FlexForm.php b/system/src/Grav/Framework/Flex/FlexForm.php
index 0f2ac0d1c..094d9555b 100644
--- a/system/src/Grav/Framework/Flex/FlexForm.php
+++ b/system/src/Grav/Framework/Flex/FlexForm.php
@@ -246,4 +246,16 @@ class FlexForm implements FlexFormInterface
 
         $this->object = $data['object'];
     }
+
+        /**
+     * Filter validated data.
+     *
+     * @param \ArrayAccess $data
+     */
+    protected function filterData(\ArrayAccess $data): void
+    {
+        if ($data instanceof Data) {
+            $data->filter(true);
+        }
+    }
 }