I found a flaw in KDE: file's rating and tags are attached to its name. As a result, if you move / copy a file, the tags disappear. Reproducible: Always Steps to Reproduce: 1. Add a tag or rating to a file. 2. Copy or move the file. 3. Open the "Properties->Information" window. Actual Results: Tags and rating of the moved/copied file are reset. Expected Results: Tags and rating of the moved/copied file to be the same as those of the source file. One of the solutions could be to attach the marks to file's hash sum.
Thanks for the bug report! This Nepomuk issue has been reported already. *** This bug has been marked as a duplicate of bug 161403 ***