The problem is explained via the example below,
Entity 'Server' - Attribute type might be 'Database' and 'Application'
Another entity 'Application' - Two different Attributes 'Application server' and 'data base server'. The intention is to refer different 'Server' cards for 'Application server' and 'data base server' of the same 'Application' card. But when I change the value for 'Application server' the 'data base server' is also changed. Is this a bug?