The customer is already using server-based JIRA and Confluence. They are looking JIRA cloud just to start a project where we have 10-15 people to work. Is this possible to use their server-based Confluence licenses with JIRA cloud? Also, the same for server-based plug-ins (Zephyr, JSU, Tempo, Roadmap) or we would have to buy new licenses for all these to work with JIRA cloud.