Marius COJOCARIU
To give you more context of my flow:
  1. I create a set of new test cases
  2. These test cases have a custom field called "Project status" which by default has "Planned"
  3. I add these new test cases to a new test plan
  4. A few weeks later the project is ready for QA
  5. I executed the test plan and everything is green
  6. The project is delivered
At this stage, I would like to update the "Project status" field to "Implemented" in bulk only for the test cases inside the test plan.
Unfortunately at the moment I can't do this in bulk, but one by one. If the test plan has only 10-15 test cases it's rather fast, but if it contains 50 test cases, it's quite of a headache.