The plot thickens... Let's hope they have good news next week

The have supplied a solution working with custom events. As part of the solution a working example for a master-detail situation was presented.

I don't know why, but Syncfusion is not able to present a general working solution, only one that forces me to implement serialization stuff in a custom event.

I'm not planning to move away from the LLBLGen proprietary framework for ORM. I do not want to write my own custom code for this. Probably I will try to use it for some limited fucntionality and in time move to another GUI library for ASP.NET.