ICEM won't let me delete parts

Jesus

Hi everybody,

I try to delete some parts after adding all their components (points, curves, surfaces, vertices, lines, blocks, etc...) to another one, but when I click on some other part, they appear again! This is very annoying, cause I have some 100 parts in the list and would like to reduce the number. Does anybody know any reason why I can't delete empty parts?

Thanks in advance, Jesus