The system doesn't respect the filling order of the values of the repeatable metadata.
Moreover the buttons 'add' and 'remove' for the multi-value metadata are not so clear. When you want to add a value, two new boxes are shown and the button 'remove' delete the value of the next box, not that of the box near to it.
See bug
http://jira.dspace.org/jira/browse/DS-37
DS-37or the SF Patch [2655052] Authors re-ordered when item editedAnyway, the attached file should fix the problem in the JSPUI uniforming the request parameter name to the new processing model.