Once in a while we get the message your local is no longer able to sync with central file when multiple users working on Revit file offline. Autodesk should come up with a way to able to see the offline changes and ask the user if they want to override the changes once they have sync with the central file. This adds a great deal of time saving so user don't have to stop work when there is a server issue. Normally when there is a server issue, user would have to copy and paste Revit objects manually.