umbraco/Umbraco-CMS — pull request #438 by AndyButland (2014-08-03 18:03:16+00:00)
Title: U4-5221 - Ensured multi-value data type prevalues are rendered sorted according to defined sort order

The issue here was that although the sort order was being persisted correctly to the database, in the mapping operation for retrieving it it was getting lost, so all sort orders were 0.