Issue #3393434 :Reusing an existing field imports its conditional fields.

Closes #3393434

src/Form/ConditionalFieldForm.php

@@ -273,6 +273,9 @@ class ConditionalFieldForm extends FormBase {
       return;
     }
 
+    // Using property name of previous alpha versions as possible fallback.
+    $bundle_name = $this->bundleName ?? ($this->bundle_name ?? NULL);
+
     foreach ($fields as $field_name => $label) {
       $field = $form_display_entity->getComponent($field_name);
       if (empty($field['third_party_settings']['conditional_fields'])) {
@@ -280,6 +283,12 @@ class ConditionalFieldForm extends FormBase {
       }
       // Create row for existing field's conditions.
       foreach ($field['third_party_settings']['conditional_fields'] as $uuid => $condition) {
+        if ($condition['bundle'] !== $bundle_name) {
+          // Bundle mismatch can happen when form display configuration
+          // derived settings by reusing an existing field.
+          continue;
+        }
+
         $parameters = [
           'entity_type' => $condition['entity_type'],
           'bundle' => $condition['bundle'],