Hi Alan,
The solution is to ensure that;
SDK Import Wizard -> SDK Debug Console = UART (not Semihost! The default)
as shown below.
(Also you need to give the second attempt at importing this project a suffix so that the [Next] and [Finish] buttons are ungreyed - allowing you to proceed.)
The imported project settings do NOT control the "SDK Debug Console" setting. You have to set it manually.

Regards, and Thank you Felipe,
Rob