Hi David,
Thank you for submitting the current feature request! I can confirm that the values of the MultiSelect component are being submitted as separate values, without keeping their selection order. The current feature request is a valid one. Based on the community interest in it and our priority queue we might consider its implementation in the future version of Kendo UI. What you can do is to vote for it. The more votes a given feature request collects the bigger the chance for its sooner implementation is.
Meanwhile, here is a Dojo example that demonstrates how we can get and send the MultiSelect's values using a hidden input inside the submitted form. If you open Chrome's network tab you will see that there is an "itemsOrder" field that holds the values of the selected items in the order of their selection.
Let me know if you have any questions related to the current item.
Regards,
Petar
Progress Telerik