If you have Final Draft 12 / 11, see Does Final Draft offer any type of "trim bin" for script content that may or may not be used down the road?
You can also copy the scene into a ScriptNote, then put it back in by copying and pasting the ScriptNotes software note text.
The other option is to use the Omit Scene feature for production:
- Place your cursor in the Scene Heading of the scene you want to omit;
- Go to Production > Omit Scene. This will replace the Scene Heading information with "Omitted."
- Click on the right-pointing arrow to either view or unomit the scene. If View is selected, you will see the contents of the scene. If Unomit is selected, the scene will be re-inserted into the script.