In an Eclipse (Oxygen.3a Release (4.7.3a)) java project, I merged two branches and resolved all conflicts, getting no compilation errors and all tests to pass.
However, EGit (4.9.2.201712150930-r) won't let me add deleted files to the index/stage. The button for doing so is enabled, but nothing happens when I press it.
As a result, the conflicts regarding these files are not resolved (adding to the index is required for that), so I cannot proceed with a merge commit.
The situation is as in the figure below.
What do I need to do to resolve these conflicts?