Wrap the import/export db in a wrapper to make it compatible with the old style

lib/private/migrate.php

@@ -451,6 +451,9 @@ class OC_Migrate{
 					'path' => self::$dbpath,
 					'driver' => 'pdo_sqlite',
 			);
+			$connectionParams['adapter'] = '\OC\DB\AdapterSqlite';
+			$connectionParams['wrapperClass'] = 'OC\DB\Connection';
+			$connectionParams['tablePrefix'] = '';
 
 			// Try to establish connection
 			self::$migration_database = \Doctrine\DBAL\DriverManager::getConnection($connectionParams);

lib/private/migration/content.php

@@ -63,6 +63,7 @@ class OC_Migration_Content{
 
 		// Optimize the query
 		$query = $this->db->prepare( $query );
+		$query = new OC_DB_StatementWrapper($query, false);
 
 		return $query;
 	}