If you search for a file in Cerebro tasks and you are not intended to start working on it, but you would add its content into the current scene, then you should consider using the projects browser in the Link/Embed mode for these aims.
You can launch this browser by clicking Cerebro/Link/Embed in the menu.
Upon activation, you will see a window with two tabs: the list of your tasks and the project browser. On either tab, you can choose a task to download the file from and also choose the required file version inside the task.
In the Link/Embed mode, the following buttons appear under the list of files instead of the accept buttons:
Link is used to insert objects from the selected file into the current scene using a link. Changes in the linked file will be displayed in the general scene as well.
Embed is used to insert objects from the selected file into the current scene. Further changes in this file will not affect the general scene.
Open is used to open the selected file and to substitute the current scene in the graphical application by the file contents.