We have to restore the space data from an XML backup file located somewhere on your local computer or a shared drive, so before deleting a space make sure that we are exporting it and storing it on your local computer or in a shared drive.
Please refer this wiki page to export a space in XML format.
To restore data from an XML backup :
- Click on Administration icon , and choose General Configuration
- Choose Backup and Restore from the left-hand panel
- Click on Choose File and browse for the backup file
- Uncheck Build Index if you want to create the index at a later stage
- After choosing the file click on " Upload and import"

