Merge pull request #1383 from craftcms/bugfix/1378-importing-nested-e…

…lement-fields

fix for importing inner element fields

src/base/Field.php

@@ -167,7 +167,8 @@ protected function populateElementFields($elementIds, $nodeKey = null)
 
                 // Arrayed content doesn't provide defaults because its unable to determine how many items it _should_ return
                 // This also checks if there was any data that corresponds on the same array index/level as our element
-                $value = Hash::get($fieldValue, $nodeKey, $default);
+                /** @phpstan-ignore-next-line */
+                $value = Hash::get($fieldValue, $nodeKey ?? $key, $default);
 
                 if ($value) {
                     $fieldData[$elementId][$fieldHandle] = $value;