During sync, some links are deleted

During cleaning bookmarks in firefox i changed name of folder, creted new folder, move some links to new folder. Deleted old folder. Next i did synchronisation on firefox. Next synchronisation od Chrome. Next day i saw, that some links diseapearad (that moved between folders). I think that you delete folder and next move links. It is bad order because it is why links diseapear. Because you delete them first :(