Thanks for the reply, I have been out of office for a while but currently I still see the old detail in 'endsWith'. This does not seem to be a polling/caching issue. I also tried to use a private browsing session which just gave me the same result.
I have just been experimenting with an automation workflow which will allow me to updated an audience via the Adobe I/O API (https://mc.adobe.io/{{tenant}}/target/audiences). But I am getting inconsistencies between what I get from the API and what I see inside Target – I have not even begun to diss...