Generally speaking, No.
With the stack exchange network, there is a limited time period within which any migration is possible, before it is locked to a site. If it isn't migrated soon enough, or an incorrect migration isn't rejected soon enough, a question can easily end up 'stuck' on the 'wrong' site.
Arguably though, if a question has a highly voted, accepted answer, was it really in the wrong place in the first place? While we would like all ROS questions to come here, we have no right to expect it. We can't just gather up questions from stack overflow and have people redirected here, we have to become the go-to place for ROS questions by our own merits. Once getting a ROS answer here is quicker and more reliable than getting one on Stackoverflow, we may be able to justify Robotics as a suitable migration path, but that may sound easier than it is, in practice.
Essentially, I'm more than happy to welcome any and all roboticists who want to ask ROS questions to ask them here, but I don't want to achieve that by taking questions from another site in the network.
The situation with ROS.answers is entirely different, and I'm glad to see things progressing there. As a Robotics moderator, I haven't had much to do with that migration. We were consulted, of course, but most of the work has been done staff members, with our encouragement.
Personally, I'm really looking forward to the potential of our combined communities.
Incidentally, There is already a mention of Robotics in the ros tag over on Stack Overflow, and I'll happily edit that to mention ROS and Gazebo Answers when the migration is complete, and people have had a little time to settle in. Hopefully that will make it even more likely that people will chose to answer here rather than on SO.
