Update ... saving a new style still would not release whatever was stuck in WebDirect ... it still showed an old style I had at one time.
I then applied the new style to all tabs controls on all layouts in the file ... then deleted the 3 other tab styles I was using in that file. This released the previous attributes in WebDirect and I can now see the new style I created.
My next step will be to attempt creating a second style again for the nested tabs. I already have another problem with alignment rendering of nested tabs in WebDirect ... but will post as a separate issue.