My department is considering downgrading our licenses from JIRA Software to JIRA Core. This may seem like a very basic question but I am looking for confirmation that Confluence is an eligible add-in to JIRA Core. I can see lots of evidence that Confluence is recommended for JIRA Software and JIRA Service Desk on the Atlassian site, but no luck finding reference to JIRA Core.
I am also wondering whether I can keep the instance of Confluence and all its current spaces and pages, or will we have to set up a brand new instance of Confluence?