Can anyone please advise as to whether a macro whose output is cached should show the latest content in Preview mode?

Steps to reproduce:

1. View cached output from macro in normal page view
2. Update the text in Umbraco, save and preview
3. The preview mode shows the previous cached text, not the updated text

If I change the cache output setting to 0, the changes appear in preview mode as expected.

Is there any way to get the preview mode to always show non cached content? The macro is a .net usercontrol.

Thanks