Markup macro is unavailable with a migrated page via CMAC

Issue Summary

The markup macro will be unavailable once you try using it with a page migrated from Confluence Server via the CMAC. Then you cannot use the macro in any page on the same site.

Environment

Verified with the environment below:

• Confluence Server v6.13.5
• Cloud Migration Assistant for Confluence v2.0.3

Steps to Reproduce

1. Create a page on Confluence Server
2. Migrate the space via CMAC
3. Edit the page on Confluence Cloud
4. Try using the markup several times

Expected Results

You can use the markup in any page.

Actual Results

When you use the markup, an error bellow occurs in the browser console:

SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data

After that, you cannot use the markup in any page on the same site except the pages created by the new editor.

Workaround

None. Consider adding yourself as a watcher to be kept informed as to the state of the bug moving forward. With that way, if our development team updates the ticket, you'll be notified via email.