Aras PLM BOM import Tools

Hi David, Thanks. I'm not asking to change the BOM outside of Aras PLM tool.  What we are looking for here is the ability to import the BOM changes going from one revision to the other revision with some changes to the assembly. As far as I know from Aras support team, the current Aras tool does not have capability to perform this task other than using the manual change or create a new method. Here is the use case Assembly 100  with revision A was released with the preliminary BOM which contains 50 components for procurement purposes. When the design ready to release to prototype, engineer wants to release a final BOM which contains additional 80 components and some changes to the existing 50 components (reference designator, quantity...etc). How do we update the BOM with these many changes? Thanks again, Khoa