"Customize campaign budget" is getting uncheck when user click on (+) icon to add BA/BL

• Steps
  ----------
• Create an order and do budget customization for multiple campaigns.
• save the order.
• Click on Edit order.
• Click on Edit campaign budget link and Uncheck the Customize checkbox for all campaigns for which the customization has been done --> Continue
• Now , click on + symbol to add BA/BL
• Don't Add any BA/BL and simply click on close button.

Actual: 'Customize campaign budget' in order page is getting uncheck.

Expected: As no BA/BL is added 'Customize campaign budget' should be checked.