Losing the Test Steps if we remove the Manual Test steps field by editing the existing Test.

Description: Losing Test steps information on existing case by editing and removing the Manual Test steps field

How to reproduce

1. Create a Test issue Type and add steps. 
2. Edit the Test and click on Configure Fields Then add the Manual Test steps field and update. 
3. Now edit the Test again and click on Configure Fields Then remove the Manual Test steps field and update. 
4.  

Actual result/Attachments: Loosing the Test steps information. 

Expected result: There should be no change on Test steps information.