Synchronizing bookmarks

Hi everybody,
I’m new to DT and have some problems…today I imported my bookmarks from safari. After a while I add a new bookmark in Safari and tried to synchronize the bookmarks in DT but didn’t work, what can i do?

The File > Synchronize command supports only items imported/indexed from the filesystem. But the next release will enable you to simply use the File > Import > Bookmarks command again and DT will only add non-existing bookmarks to the already imported ones.