Yes, the data you entered in RiV will move into Vita. The "data migration" effort is a significant part of the system transition project.
We worked very hard to have all the data in RiV move over into the right places in Vita. However, there will be some places in Vita where you will need to adjust data in various fields, fine-tune formatting, or make other changes. Because the systems are structured differently, and because your data is unique to you, there is only so much we can do. You are the final authority on what your data should look like.
This chart provides a map where each RiV field aligns in Elements. It also lists the few fields that weren't transferred.