I have an old app that was written in 2.6 and I am going to upgrade to 5.5.
Is there a consolidated upgrade guide for that?
I know it is a huge jump. I did find the converter for the project.
B) Migrate your own code that uses LLBLGen generated code. This shouldn't be that hard, however your current version is old and you may find various breaking changes accumulated though time. Here in the documentation is the guide to migrate per version. A typical approach is to migrate progressively from the oldest guide to the newest. In your case: