I am checking out the new Link Card functionality.
I immediately thought to create a link card of a Google Drive spreadsheet that I use across a number of other cards.
Creating the link card worked fine. (I did notice that if the Google drive document name had been changed, Trello provides the old version of the name.)
But I can't attach this new link card to any other card. When I click the Attachment button and choose Trello, the Add Card or Board box suggests other cards and offers to search for others, as usual. But the search function will not find the new link card.
I see no way to attach a link card to another card. Am I missing something? Is this the way it's supposed to work? Is this a bug or a feature?