“missing volume objects” in NDS

I have approximately 8 servers. I can see the volume objects on about 4 of the severs. The server objects are still there. Some of my container login scripts are missing also. Here’s the mystery: users can still map drives to the volumes that are missing in NDS.They can also access the files. They also get the drives specified in the missing login scripts. How can I fix this. I don’t think recreating the volumes is the answer.