Hi Nick,
I have been using the Ventus Meteotime W928 for over a year now with the Irox station type selected within the WD programme.
For changing the Altitiude easily, to get the air pressure correct I go out of WD and into the Weather Capture (WC) software that came with the W928. I change the altitude and upload then exit WC and go back to WD as the primary software. this is much easier and quicker than a full reset.
Hope that helps.
Regards
Philip