Given a body:

<ac:structured-macro ac:name="panel">
  <ac:rich-text-body><p><ac:structured-macro ac:name="status"/></p></ac:rich-text-body>
</ac:structured-macro>

Calling the rest resource to collect the body of this macro, you would expect:

<p><ac:structured-macro ac:name="status"/></p>

You actually get:

<p></p>

This is because the sub macros are stripped out. This is expected to effect all macros with rich text bodies that contain macros. Non-macro markup is not effected.

Started here: https://groups.google.com/forum/#!topic/atlassian-connect-dev/9enIhCvU1qA