Files are uniquely associated to a project through a unique ID (GUID) and file name, so if either of these changes, you won’t be able to see the coordination issues that you previously made. We recommend making sure that your naming convention is finalized prior to creating issues on a file. Also, all 'Standard' users should use the exact same file (NWF or NWD) that the Admin has associated to the project in order to see the issues for that file.