I’ll update here if I find, but having looked at Options under Tools not seeing the way to select/de-select the use of the suffix... where is it?
EDIT: one place it’s supposed to be is on the output options page of the wizard (per online wizard docs) but seems like it’s commingled with the “overwrite” selector and no way to select to do the suffix or not. Seems like a bug aka a feature I don’t fully appreciate yet.