Yes. Clearly the plan was to trade Dozier and move Polanco to 2B. That's not a bad plan, and that is probably still the plan. This isn't a huge deal. In, 2016, Polanco got a lot of time in the majors at SS and a lot of time in AAA at 2B (something like 55% v 45% 2B v. SS). It's not like they moved him to DH or something, he is getting relevant middle infield experience.