Hello GBG1138,
To leave only alignment results in the project remove the following elements from the chunk contents in the Workspace pane:
- shapes,
- depth maps,
- dense cloud,
- 3D model,
- tiled model,
- DEM,
- Orthomosaic.
Also you can right-click on the Tie Points line and use "Remove KEY points" option, if it is active.
Then select Save As option in the File menu and choose "Metashape Archive" file type for saving the project under the different name.
P.S. I don't see any attachments in this thread.