Thanks, Ncornia, that worked for me, (how I never thought in that) I end up using the cut symbol in the wall and it worked better for me in this case, cause I have a window in that same wall that is above the cut plane level.
BTW, I discover what was causing the problem, and was that I put in the windows the option to show projected instead of symbolic. As soon I change it, it works fine.
Thanks!!