User continue to see Target variant even after it is set to zero percent
We have noticed that a variant in a Target activity is very "sticky". Once a user sees a variant they can not get out of it, even when that variant is changed to zero percent in Target. We have tried clearing cookies and then closing the browser, and even then we see that zero percent variant experience. The only way we have found to solve this is to clone the activity and disable the old one.
How is Adobe keeping track of the user after they clear cookies?
Is there any way to actually turn off a variant once it has been seen without cloning the activity and disabling the old one?