I'm trying to create a query to change the card color on our Kanban board if there is a linked issue on the card. The JQL does not allow for linkedissue not= null or empty so unless I create a query that says linked issue is not ABC-123, then it appears that all cards even those with no link get colored.
I have created a query for issueLinkType != "created by" as a workaround since we do not using the link issue type of "Created by" but the board only shows a few cards with the color and not all that apply for the linked issue type, for example "relates to".