I'm looking for some advice when migratiing a windows application in C++ fron engine V11 to V12. Is there a lot of modifications in the objects and the APIs or is it relatively straightforrward to do that.?

I know that it can be difficult to answer that without knowing the code implemented but it's just a global estimation considering if the APIs and objects changes a lot or not. How the compatibility is assumed ?

When we moved fron V10 to V11, it was not so hard. Is it the same kind of effort I have to consider from V11 to V12

Thank you for your help