When 2 meshes have overlapping UV's, each edge turns into a seam resulting in unnecessary extra UV counts in game engines.
The work-around for me is to export from blender and sew the edges in maya.
I have been experiencing this since 2.68 when i started using Blender, so I'm sure this error is not specific to the new versions.
I have attached screenshots and obj files.
Please do fix this error.
{F85811}
{F85810}
{F85806}
{F85807}
Thank you so much :)