code conflict in models which are on two different layer.

Hi,

I am new to this forum and Ax2012, I am facing a problem with models, I have created model on CUS layer and one on VAR layer. I did some modifications to class "PurchTableForm" on the model which was attached to CUS layer.

                                            Now am working in the model which I created for VAR layer, and there is some logic which i need to write in the same class "purchTableForm" but the problem I am facing here is if i modifed somehting in a method which I modifed in the CUS layer model, the modifications are not stored in my current layer(VAR) but they are moved to CUS layer (I compared my var layer and cus layer using compare Tool).

Looking forward for some advice on how to solve this problem.