Box Sync update 'misplaces' hundreds of files, creates multiple versions

I have over 20 GB of files on box. I use it to access the files from my Mac, Win 7 PC and iPad. Two days ago, I got a notification on my Mac indicating a new update for Box Sync was available. I executed it. After the update, it gave a notification that files were being migrated to a new folder and I should 'not use Box Sync' during the migration. I left my MacBook alone but noticed that Box was doing a Sync. After a while I returned. There was a new 'Box Sync' folder. I started working. Upon trying to open a file, I found it missing from the sub-folder in the Box Sync folder. I had worked for hours on this doc the night before. After several painful minutes of panic, I found that there was another new folder 'Box Sync backup (not synced). This had 216 files in multiple folders in it. Luckily, including the file I had been working on.

My entire set Box folders is a mess. I did the update on my Mac, here I have 200+ files off to another folder tree. Many of these files are duplicates of the files in the Box Sync folder, but different versions. On my Windows PC, I still have the older folder structure, with older versions of files. This is not only true for files I edited the night before, but files I have not touched for days.

I files ticket immediately with Box. It is over 30 hours and I have no response from them. When I open any file now I have to manually run a search on my Mac to verify that there is not another copy of it in the 'other' Box folder tree. I have no confidence when I edit a file on my PC that I was working on the latest version and it will sync back to my Mac.

Anyone else suffer this fate? Is there any guidance on how to resolve it? Do I have no option but to manually examine and move files from the backup to the Box Sync folder?