Remove or hide implementation plan / backout plan

[Thomas Lau]

Hi admins,

In our project. Every tickets are having Implementation plan, Backout plan, Test plan. 

I have checked some Jira documents. And it said it is related to Change management in project settings. 

May I know:

-When I disable it. The previous records will be lost or not? Because some of the issue types are using this feature

-And is there any other way to hide them in some of the issue types? Because we still want to use it in one of our issue types.

-Also, is there any places to store archives and backup of the tickets?

Thank you!