My PC OS is Windows 10. The external diff tool is P4Merge. Source Tree version 2.1.2.5
In Source Tree, when there is merge conflict, I launch the external diff tool P4Merge. In the P4Merge I resolved the conflict, click save and close the P4Merge. It is suppose that the conflict in the source tree disappear, however it is not. The conflict file still in the 'unstaged file" window. What is the problem and how to get around it? Thanks.