Hi All,
I am very confused of the terms I have found while searching in google on Migrating the content from BO 3.1 to BO 4.0.
Some were saying migrating the content using some process and some were mentoning upgrading the version of BO using some process.
I am changing from BO 3.1 to BO 4.0. what actually we must use here. Is it Migration or Upgrading.
After searching I found that, if system architecture is different, then it is migration if not it is upgradation. is it correct. ? 
Can any one give a clear vision on this.