You can find an example showing how to use multiple parseFormats 
and how to validate
the DatePicker here
. Additionally I would recommend you to check the Kendo UI Globalization guide
, which will help you resolve the default date formatting. I am not sure I understand your questions regarding the ServerOperations option. Could you please clarify and provide a runnable project where the issue is reproduced? This would help us pinpoint the exact reason for this behavior.
On a side note, I would like to remind you that as a general practice it is accepted to ask different questions in separate support threads. This makes it is much easier to follow and concentrate on the particular issue which usually leads to its faster resolving. For additional information on that topic I suggest to check the following blog post:
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