Why are there model lines in detail components? This seems like an oxymoron since detail components only show up in the view they are placed in (or has this changed?). Perhaps it is me. You only have one way to draw a line that I have found, but you can convert lines between symbolic and model. To make things more confusing, when you hover over a line, it just says "line". I've been making some detail components from cleaned-up CAD block but importing the CAD file, exploding and purging- could this be the issue?

Any elucidation would be appreciated.