update

Civi/FormProcessor/API/FormProcessor.php

@@ -81,7 +81,7 @@
 
 	protected function getFields($formProcessorName, $apiParams, $fieldName = null) {
 	  $fields = array();
-    $cacheKey = 'FormProcessor.getfields.'.strtolower($formProcessorName).'.'.$fieldName;
+    $cacheKey = 'FormProcessor.getfields.'.strtolower($formProcessorName);
     if ($cache = Cache::get($cacheKey)) {
       return $cache;
     }
@@ -96,9 +96,6 @@
 
     // Process all inputs of the formprocessor.
     foreach($formProcessor['inputs'] as $input) {
-      if ($fieldName && $fieldName != $input['name']) {
-        continue;
-      }
       $field = array(
         'name' => $input['name'],
         'title' => $input['name'],

Civi/FormProcessor/Type/FinancialTypeType.php

@@ -45,4 +45,12 @@
     return $this->options;
   }
 
+   /**
+    * Sets the default values of this action
+    */
+   public function setDefaults() {
+     parent::setDefaults();
+     $this->options = null;
+   }
+
  }

Civi/FormProcessor/Type/MembershipTypeType.php

@@ -45,4 +45,12 @@
     return $this->options;
   }
 
+   /**
+    * Sets the default values of this action
+    */
+   public function setDefaults() {
+     parent::setDefaults();
+     $this->options = null;
+   }
+
  }

Civi/FormProcessor/Type/OptionGroupType.php

@@ -194,6 +194,7 @@ class OptionGroupType extends AbstractType implements OptionListInterface {
     $this->normalizedOptions = null;
     $this->denormalizedOptions = null;
     $this->options = null;
+    $this->optionsLoaded = false;
   }
 
 }

Civi/FormProcessor/Type/ParentMailingGroupType.php

@@ -110,4 +110,13 @@ class ParentMailingGroupType extends AbstractType implements OptionListInterface
     $this->_groupsLoaded = TRUE;
   }
 
+  /**
+   * Sets the default values of this action
+   */
+  public function setDefaults() {
+    parent::setDefaults();
+    $this->_groupsLoaded = FALSE;
+    $this->_childGroups = array();
+  }
+
 }

Civi/FormProcessor/Type/YesNoOptionListType.php

@@ -86,4 +86,13 @@ class YesNoOptionListType extends AbstractType implements OptionListInterface {
     return $this->options;
   }
 
+  /**
+   * Sets the default values of this action
+   */
+  public function setDefaults() {
+    parent::setDefaults();
+    $this->options = null;
+    $this->optionsLoaded = false;
+  }
+
 }