How can I retrieve data for a field I accidentally deleted?

Question

Okay so, I was updating a project board and deleted a custom field titled "Time Spent" which was a numbers field that users filled to reflect the time it took them to complete that ticket. 
I Was just removing it from the Ticket but turns out i wasn't supposed to yet and reinstated it immediately. However, I got a complaint saying the fields for all previous tickets is empty and no one remembers how much time they spent on each ticket. 
How do I retrieve this data, please help ;-;

Staffan Redelius · Answer

Hi, @Mubashra Naeem and welcome to the community

Are you sure you only removed it from the screen? If the field was deleted from a Team managed project then the information is gone and can not be retrieved unfortunately.

https://support.atlassian.com/jira/kb/delete-custom-fields-in-team-managed-projects/

If the field was deleted in a screen in a Company managed project it would still be available including all data (as @Marc -Devoteam- explained above).

Best regards,
/Staffan

Marc -Devoteam- · Answer

HI @Mubashra Naeem

If you removed if from a screen and added it back to the screen, no data will be lost.

Removing a field from a screen, will not remove the data set in the field from the system.

This doesn't even fall in the 1st or 2nd scenario

Mubashra Naeem · Answer

We had saved this field in the WorkType option. I just removed it from the ticket but it was there in our Field library. Does this situation fall under the 1st or 2nd scenario?