Synchronize mindmaps in the Android version

[MrMa]

The new Android Xmind client is a very welcome addition. Only problem is that I cannot understand how to properly synchronize Mindmaps that is created or updated using the mobile client. If I save a mindmap to Dropbox or Google Drive from the desktop version of Xmind and the open this up in Xmind for Android, all updates seem to be saved internally in the Xmind app. The only option I can find to export it is to "manually" share it with some othe appication. Is there any way to use Dropbox or Google Drive directly from within the Android app?