Dynamo not working in project

design duct to fabrication duct.dyn (78.6 KB)
i created a dynamo to convert design ducts to fabrication services. it is working perfectly in test projects. but is not working when I apply in actual projects. what may the reason? anybody can help me.
when I select supply ducts it will select other systems too and some times it will omit some ducts which I selected.

difficult to say, I cant identify your costum nodes :frowning: . Maybe you can explan what you want to do manualy?

It sounds like that the elements maybe put on an uncorrect category?

what is the error? please post some screenshots.