Origin automatically saves each Workspace that you create. This allows you to move from project to project without losing your work.
To return to a previously-scanned Workspace, go to Scan mode and tap Workspaces. You will then see all workspaces currently stored on your tool.
Any workspace that was saved with the tape array that is currently visible to Origin will appear at full brightness. You can return to one of these by tapping its icon.
If a Workspace was saved with a tape array that Origin cannot currently see, it will be greyed out with a "not visible" icon.