Follow these steps to move a document or folder to another folder:
In Jira, go to Projects
Click the Documents tab
Make sure that you are on the right project
Locate the document that you want to move and click on its Move option under the Actions menu
The Move action is available only if the user has Move permission.
In the Move window, select the Destination Project and the Destination Folder in the folder tree hierarchy
To be able to move a folder in another project, you must have View and Create permissions in that project.
The Split Pane Layout mode allows moving items (documents and folders) from a pane to another by using drag & drop.