I’m looking for a way to reorder or move selected items up and down in a Multivalue Lookup Column. The list to select from is ordered correctly but the selected items are ordered by how they were selected. Our end users would like to move these items up and down the list. Is this possible with JQuery or SPServices? I’m using SharePoint 2007 currently. Thanks in advance for any advice anyone can provide.Â
So, this doesn’t answer your question directly, but I did just do a bunch of fiddling with multi-value lookup columns, and the code I have in this post might help you wrap your head around how the values are stored:
http://deannaschneider.wordpress.com/2013/10/31/replacing-multi-select-lookup-field-with-checkboxes/