Hi, I am confused about the Shapes-Subdivide because when I want to split hundreds of seperated shapes(I treated them as blocks) to get various lots, most shapes worked well but a few of them disappeard! (as the image attached shows)
I just want to know why this happened, or if there is a better way to split those shapes (using CGA or pyhon script) to get different sub-shapes?
My shapes:

after applying the Shapes-Subdivide in the menu:

Some successful examples:

Thanks!