KB482951: NullToEmpty function within a concat statement returns empty in Dossier

Starting with the release of Strategy ONE (March 2024), dossiers are also known as dashboards.
SYMPTOM:
In Strategy 2019 and above, NullToEmpty function does not work within a concat statement. In some cases, an attribute may contain empty values, so the user needs to convert NULL values to empty strings. Then use it within a concat function.  But statement looking like Concat(attribute01@ID, NullToEmpty(attribute02@ID)) always returns an empty value.  
STEPS TO REPRODUCE:

1. Create and publish cube containing Customer as the attribute and Revenue and Item as metrics in MSTR Tutorial. 
2. Create a new Dossier and connect it to the cube.
3. Create a derived attribute that will always return an empty value. Name it EMPTY.
   ID Formula:    NullToEmpty(ZeroToNull(0))
4. Create a second derived attribute.
   Concat(Customer@ID, “abc”,Item@ID)
   The answer is like this: 12345abc54321
5. Create a third derived attribute.
   Concat(Customer@ID, “abc”,Item@ID, EMPTY@ID)
6. The answer should be something like this: 12345abc54321
   But this attribute returns the value as empty

 
CAUSE:
This is a known issue. 
WORKAROUND:
Replace the NullToEmpty(attrib02@ID) with IF(Length(attrib02@ID) = 0, "", attrib02@ID).