View columns are lost after copying and pasting the existing view into the same model. Why?

When I copy an existing View which has columns in it, into the same model, those View Columns do not come in to the newly pasted View. Why is it?

Error In Advisories:  EBS-1040 : The Attribute object cannot be created because its Parent Attribute or Parent Relationship cannot be found in the model

Solution:

This is by design as View Columns are displayed in the View only if all dependencies of the View Columns (Relationship to the referenced Table(s) and or View(s)) are available and are associated in the View editor. This can be done by establishing Relationship between the new View and its referenced Table(s) and by selecting Columns from the associated Table(s) in View Editor of the newly pasted View.  On the other hand if you do copy and paste both, the View and its referenced Table(s), the Columns will be populated.

For the Advisory note, it is simply a message to clarify the reason why the View Columns were missing and is self explanatory:  'The Attribute object cannot be created because its Parent Attribute or Parent Relationship cannot be found in the model'.