Changing the owner changes the branch name, so the simplest explanation is that you were using the obsolete name for the branch when you tried to merge. That would make this a dupe of bug #190116. If this was not the case, please post the actual before-and-after branch names so that we can investigate further.
Changing the owner changes the branch name, so the simplest explanation is that you were using the obsolete name for the branch when you tried to merge. That would make this a dupe of bug #190116. If this was not the case, please post the actual before-and-after branch names so that we can investigate further.