Hi Billa, so it should be possible to separate out the faces, untrim them, use ChangeClosedCurveSeam (http://moi3d.com/forum/index.php?webtag=MOI&msg=10125.8), re-extrude the surfaces with the altered seam point so the seam edge is not in the active surface area, then trim and join.

I'll see if I can help you with that a little later today.

- Michael