I am facing an issue with spool definition. Basically after defining elements for spool, two pipe sections are ignored all the time no matter what I try to do. Does anyone have an idea what may be causing such issue?

Spool definition as follows:

And when I highlight the spool two sections are not selected (not added to spool). Those two sections are also not showing on drawings.

Any idea what is causing such behavior?

I can also add that when I use Edit Spool, the long vertical pipe is still selected whereas the sort piece at the back is not selected. Is there any workaround to link add two missing parts to spool folder?