Smartview Member Names are not Consistent

Summary:

In Smart view we have a few Hierarchies. We have the Member Name Display = Distinct Member Name Only.

Some values are displayed as:

[Hierarchy Name].[ParentValue].[Child Value]

And others like:

[Company]@[Balancing SegmentLevel 30 Code][Child Value]

The same value appears in more than 1 hierarchy and in some hierarchies the same value can be either one or the other or the above.

Within the same Hierarchy some values are in format 1 and others in format 2

Can anyone let us know why this is and how they can be consistent?

Note:

If we change Member Name Display to Member Name or Alias