KB34111: Column aliases generated by the attribute editor remains outdated after the attribute form expression is updated in MicroStrategy Developer 9.x

SYMPTOM:
Column aliases do not reflect the new column name when the expression is defiend with a RTrim or LTrim function in Strategy Developer 9.x.
 
STEPS TO REPRODUCE:
Execute the following in Strategy Tutorial:
 

• Create a new attribute with a form expression of RTrim().
  

• Check the column alias and confirm that CALL_CTR_ID is used. Save and close.
  

• Re-open the attribute editor and change the expression to RTrim().  Save and close.
  

• Open the attribute to check the column alias for the form edited and notice CALL_CTR_ID is still used.
  

 
CAUSE:
This is a known limitation of Strategy Developer 9.x. When the expression is defined with the column name without any function, the column alias gets updated with the new column name.
 
ACTION:
Edit the column alias and specify the name as need be. For more information about options for column aliases, refer to the following Technical Note:
 
KB4371 - How to select or modify the column data type for an attribute or fact in Strategy Architect 9.x and 10.x