JT's dashboard

My Xmarks aka Foxmarks are insane from merges. I have at least 4 of every bookmark and duplicate folders that are starting to open with bookmarks from other folders.
What happened to being able to open "Organize" & drag the bookmarks from one column into the folder one wanted to keep then delete the dupes? That was a good feature of Foxmarks. I see no functionality in the Organize window now just two columns with no function beyond viewing the mess.

Help Please

I would be great if a program like the free "Duplicate Cleaner" would seek & allow to destroy these like it does other files on the computer.