Picklist options are converted to lower case when not needed

Problem

Attribute picklist values are converted to lowercase when this is not required.

Example picklist attribute with values:

• Ersatzteilkatalog
• GUI-Text
• Handbuch
• Illustrated parts list
• Wartungshandbuch

will be evaluated as:

• ersatzteilkatalog
•  g u i- text
• handbuch
•  illustrated parts list
•  wartungshandbuch