I am new to PCB design. What I have learned and done was that we took existing layout database, modified the routing and via placements for certain critical interfaces and delivered the improved layout. So, we have not modified the components and netlists at all.
Now, I am given a new ball-map and asked to route a reference layout for it. I think this will involve changing the netlist and importing the new ball-map, but I am not sure what the exact flow should be. Can you please advise what the steps are to modify the existing ball-map and the netlists?
Thanks a lot!