Why I Can't find the geometry in Family Editor

[1143413815422067]

I have just got a family, a column with another family nested in it.
The all geometry of this family can be seen in project file, but if I edit this family, I can only find a reference line in the Family Editor.
the below file is the Family,
IF you have any idea about this? Many thanks!!

[bt.commenter343255]

You can place one of those column capitals into that family, just Create-->Compnent--> and then pop the column cap into the family.