Access to the older programs is maintained for those who might prefer them and for those who are striving to migrate old designs to BearboatSP.
BearboatSP can open and convert BearboatPro files, but it cannot open Bearboat Classic files. BearboatPro can open Bearboat Classic files and convert them to BearboatPro files. They can then be converted to BearboatSP files using BearboatSP. Therefore, moving an old design from Bearboat Classic requires using Bearboat Pro as an intermediary.