Is the New_Entry form used only for response doucments or can it be used for a parent document?
I think using @AllChildren is redundant as @AllDescendants would include both immediate Responses and Responses to Responses.
Assuming the New_Entry form is for responses only, try this: SELECT Form!= "NEW_Entry" | Form = "NEW_Cad" | @AllDescendants
... but I don't think it's possible to exclude responses based on a formula when using @AllDescendants and @AllChildren