Using this option admin user can import Leave Opening Balances, which would be done in the initial configuration of leave and it can also be used in the middle of leave year too, this will override the existing Leave Opening Balances with new values.

To import Leave Opening Balance, 

Go to Utilities menu >> under Legacy Import >> click on Import Leave OB link


Select option Pull OB data with template, which fetches the existing opening balances along with the template, in which user can make amendment in the leave opening balances and import the same file.