Based on the provided snippet I have prepared a sample project. The Kendo version in the project is 2017.3.913,
but I have also tested with the latest 2017.3.1026.
As you could see in the linked screencast
, the items in the MutliSelect are pre-selected correctly.
The following article
, regarding the pre-selection of items in MultiSelect could be helpful.
May I ask you to modify the attached sample project, reproduce the issue and attach it back for further review? This way we could examine it locally and assist you further.