rectangular beam-discrete laminates-cross sectional linking options issue

[eugenio]

hello,

I'm trying to optimize a composite rectangular beam but when I pass from effective laminates to discrete laminates and perform the sizing it turns out a beam with same thickness for all walls (top, side and bottom).
All Cross-sectional linking options are deactivated, also sizing with effective laminates turned out different wall thicknesses.
I also tried to perform the sizing with metallic (isotropic) material and the results, as expected, were similar to effective laminates ( different wall thicknesses).
what is the problem?

thanks,
Eugenio