If there is no .qvw extension, the 'xyz' file should not be recognized in the QMC, then it is impossible to add doc CAL to it at the beginning. So file 'xyz' should have .qvw extension. Maybe you hide the extension.
Have you tried to add 'xyz.qvw' back? And are you sure you add the file in correct path?
I think you missed the step to clear the server license as well. I decided to clear the server licence and reapply the license. I made screenshots of all call settings so i could reapply these as well.