I've come into a situation where the drive mappings were done with batch files and the letters used were inconsistent between the users. I think that my script was unmapping the drives correctly using "USE * /DELETE /PERSISTENT" but the old drive letter mappings are coming back. I'm thinking that the people have shortcuts on their desktops that are remapping the drives under the old letter but I'm not sure that's the case. How are these old letters coming back and what can I do to prevent it?

Thanks,