The flat pattern should work fine and weld corner features will be suppressed. Please note that you can't have profile from welded corner into flat pattern as those will be made only after bending the part.
Thank you very much for your reply. Just another query why can you not see the corner cuts that appear when you unfold the body whilst using flat pattern? I am pretty new to using sheet metal in solidworks.
The flat pattern should work fine and weld corner features will be suppressed. Please note that you can't have profile from welded corner into flat pattern as those will be made only after bending the part.