Voice isolation in Microsoft Teams enables personalized noise suppression for calls and meetings

PeterForster Par is correct where after enrollment is complete, there are two copies of the voice profile. The one that is stored locally is the one the Voice isolation feature uses to filter out voices that do not match the voice profile on the local device. That is why the article you mentioned refers to the locally stored voice profile. 

Both voice profile copies will follow the data storage and retention rules as outlined in the hyperlink further below in the same article. See Overview of voice and face enrollment for more details.

Are you still experiencing issues with accessing the voice isolation feature? If so, let's keep chatting 1-1 to see how we can help.