Furthermore, Google appears to treat those as a permanent redirect (301).
FPT experiences, however, are not a lost cause. You can give a hint to the search engines about what you're doing by ensuring the alternate page includes
rel canonical information in the source code that points back to the original URL. This tells the search engines that you are not trying to hide different content under a page, but rather that the page that is specified is the canonical source and is the one that should be indexed.
Unfortunately, this is not something Monetate can do for you. Monetate works on the front end and modifies the page after it's served. This information sits in the
<head> of the page and needs to be there when the page is served by your servers.
For experiences that redirect some customers to another page, it may also be very useful to add
rel=nofollow to the HTML that you insert to tell search engines not to follow the link and index the next page. Where possible, you should avoid running Full-Page Test experiences for too long because this can also have an adverse effect on the way that Google measures page ranking.