Hello.
Several years ago, I inherited a web application that uses CSLA 2.1.0.22. Since then I have upgraded the application to 3.5 then to 4.0 with no issues. This whole time we kept CSLA at its version as we didn't realize it was being kept up to date. I am looking at upgrading the web application to 4.5 soon and I see there is a corresponding CSLA version. What are the suggested steps to upgrading an existing application that uses CSLA 2.x to 4.x? Is it advisable? Is it necessary? Any information would be appreciated.