If you have a drawing open, all the layouts in your drawing are shown in the sheet list in the Publish dialog box. Right-click in the sheet list. Click Remove All to delete the layouts from the list of drawing sheets.
The drawing sheets in the saved drawing set are displayed in the sheet list in the Publish dialog box.
If you have background publishing enabled, the animated plotter icon on the right side of the status bar indicates that the publish job is in progress.