It seems that all tech help just repeats the steps without reading our concerns.

We have taken all the actions you suggest.

The problem, once again, is that we are unable to change the mapping; the drop down arrow is greyed out.

I have been on the phone with tech support for hours only to get a case number #[removed] and still no return call from you as promised two days ago.  

I would appreciate a call today and hopefully you have worked out the bug and everyone can get past this problem.

Thank you.