RelatedEntities Entity Reference Collection Always return 1 record (record selection from subgrid)

Hi Everyone,

I am facing very weird problem since yesterday in relates to Associate Plugin for N:N relationship.

I have a N:N relationship between Entity A and Entity B. Entity A Form holds Entity B type subgrid and I have a requirement to perform some validation on association of A (Target Type) and B (RelatedEntitiesReferenceCollection).

The Context.InputParameter holds Target (Entity A, type)  Relationship and RelatedEntities (EntityReferenceCollection of Entity Type B).

The problem I am facing is: Even if i select more then 1 records from subgrid of Entity Type B, the plugin always returns 1 record count in RelatedEntites reference collection. 

Is there any change has been made in the SDK that I am not aware of??

Any help would be really appreciated.

Jai