Parent Contract for Case in CRM 2016

Hi All,

I was trying to add a custom view on Contract lookup field to display the parent account contract in the Case form. However, it seem that every time the contract lookup is populated with the customer 1st (which is the sub account) even with the custom view. This caused the view doesn't return any records.

According to my colleague, previously in CRM 2015 they still managed to select parent account contract.

Is anyone having this issue as well?

Thanks.

Regards,
Teh