I am having a problem where I will have an Xref, either with Absolute or Relative paths, where I will save the drawing and when I re-open the paths will be broken.  It appears part of the path name will be spontaneously changed for some reason.  For example, if the file was in Volume/shared_files/current_projects/project_x it will change to Volume/shared_files-1/current_projects/project_x.  In any case, regardless whether I relink it absolutely or relatively, the link will be broken again later when I reopen with that incorrect path name.

Is this a mac problem or a Cad Problem?  Screen shots of before and after showing the file paths are attached.