Baseless Merge with TFS 2010

In VS 2012 we got UI for Baseless code merge But for VS2010 we need to use command line tool. When you would like to use Source Control Merge Wizard in Visual Studio (e.g.; by right clicking a branch folder then going to 'Branching and Merging' -> 'Merge') and you find that the intended target is not in the 'Target branch' selection that means the source does not have any relationship with the...