Autodesk Revit MEP

[#1]

Can someone please tell me where my model line visibility is? This must be something easy but true to Revit it is not under lines... go figure.I have created a family with model lines but they are not showing up in the model. I have checked everything I can think of & no luck. Thanks in advance.

[#2]

Can you verify that the lines are not just turned off in the family, and that they are visible at all detail levels?

[#3]

That is confirmed. I edited the family & clicked on convert lines. I do not know what I did but I now see them in my model. Sometimes the best solutions are the ones you find by accident.

[#4]

That would indicate that the lines were originally Symbolic Lines, and then they were converted to Model Lines by that command.