We have two corporate JIRA instances (one 5.x, one 6.3) and a Confluence instance (4.3.1) here and make heavy use of the confluence JIRA Macro to link to JIRA issues within Confluence pages. We have both JIRA instances set up as app links in Confluence, but the macro only seems to support linking to issues in the default/preferred app link. Is there a way to choose JIRA instance when setting up an issue link using the JIRA macro?