My situation is this - I have a card of type Project, and a card of type Risk. On Risk I have a property of "Related Project" which will get set to a card of type Project. In the description area on the Project card, I added MQL so I can list out the Risks associated with this Project. I also added a link to add a new Risk. I want to be able to default the Related Project property to the current card. The following link will actually cause an error and you have to then go out to the projects page.
project/cards/new?properties[status]=open&properties[type]=risk&properties[Related Project]=THIS CARD">Add a Risk</a>
Using the link without setting the Related Project prop results in a successful creation of a Risk card.
Any help would be appreciated.