1. Create a upstream project "upstream"
   • Execute shell

     echo ${BUILD_ID} > artifact.txt
     

   • Archive artifacts
     • Files to archive: artifact.txt
2. Run "upstream"
3. Create a upstream project "downstream"
   • Parameterize
     • String Parameter
       • Name: EMPTY
       • Default Value: (empty)
   • Copy artifact
     • Project: upstream${EMPTY}
4. Run "downstream" with EMPTY=(empty)

Expected result:

• Copy artifacts from "upstream"

Actual result:

• Fails to copy from "upstream${EMPTY}"