My board's backlog doesn't show any story after i removed the "Backlog" column from sprint

[Guihong Ma]

I remove the "Backlog" column from "Active Sprint" board, and suddenly all the stories in the "Backlog" section disappeared.

[Trudy Claspill]

Hello @Guihong Ma 

Welcome to the Atlassian community.

For both the Board View and the Backlog View, only the issues that are assigned a status mapped to a column will be displayed.

If you have a status in the Unmapped Statuses area of the Columns configuration, issues in that status will not display one either the Board or Backlog.

[D_ Daniel]

This worked for me. Thank Trudy.
Configuring the swimlane columns is done by clicking configuration from the Issues boards. 

[Nikola Perisic]

Welcome @Guihong Ma 

You may want to check this article: https://community.atlassian.com/t5/Jira-questions/quot-Backlog-quot-status-tickets-displaying-in-Scrum-Board-s-1st/qaq-p/2554238

[Guihong Ma]

it seems that problem was solved without a logical explanation.

My problem is still there.

[Nikola Perisic]

How are your statuses mapped with your columns?