I cannot seem to find subtasks that I create in one project, then assign to another project using a sprint board. I can see subtasks in the backlog that were created within it's project, but if I assign a subtask from a different project, it will not appear in the backlog.
Even when I check the filter for the board, it shows the subtask in question. Even after seeing it, I will go back to the backlog and not see it there. Where is the disconnect?



The first picture shows the subtask in question. The next shows it in the project I need to see it, but within it's filter. The last is in the backlog f the target project without the subtask.