Remaining estimate does not recalculate itself after Original Estimate is updated

[Shravan K]

Hi, we use JIRA cloud instance to track our product development.

Often our developers are required to allocate more hours than what is estimated.

The problem we couldn't figure out a solution was when the "Remaining Estimate" is reduced to '0'. 

We understand Remaining Estimate is deprecated with the time logged from the original estimate until it is reduced to '0'. 

Now in our situation when we update the 'Original Estimate' field, we were expecting that the Remaining Estimate field would automatically recalculate and update itself and would now show up >0 value that is to say there are few hours left until completion.

But this is not the case and the Remaining Estimate is stuck at 0 after it is reduced to 0.

Any insights would help?

Thank you,