New issue view condition?

We are moving plugin content from a jiraIssueTabPanel into the jiraIssuecontents module. In order to support users in both the Old and New Issue views, what condition can we use in the atlassian-connect.json to determine whether we are in old or new mode?

ie. (desired behavior)
New Issue View - show in jiraIssueContents module
Old Issue View - show in jiraIssueTabPanel

Currently we get the plugin showing twice in the new issue view (both IssueContents and TabPanel).

Thanks in advance,
Chris