I've got Bamboo linked with Bitbucket server so that when we created a PR it automatically runs a build of the PR. This works great. However, the moment we update the PR the build icon in Bitbucket goes away and a new build is never run. The only way to get a build to trigger again is to recreate the PR which means we lose all comments on the original PR. How do I get Bamboo to trigger a new build when the PR is updated? This seems like a basic feature that's missing.