Execution results in Cucumber format are not being imported into the Test Execution specified in the JSON report

Short description: When using an underscore [ _ ] in the Issue key, to do the reference to the Test Execution (i.e. @TEST_12345) where the results should be imported, if the project key of this Test Execution is "TEST" a new Test Execution is always created, instead of updating the specified one.

Steps to reproduce

Step	Results
Create a new project with the key "TEST"
Test Execution "TEST-2" and Test "TEST-1"
Importing the Execution Results report doing the reference to the Test Execution "@TEST_2"

Actual Results: Using the previous configuration/conditions, when importing the execution results a new Test Execution is always created.

Expected Results: The Execution results, should be imported to the Test Execution specified in the report @TEST_2