Detail Plan callouts cannot be referenced by other plan callouts.
Originally Posted by hadens
I recently ran across what I think is the same situation as you are describing. The response from subscription support was that this is a known limitation, which hopefully will be addressed.
I think it's definitely a bad limitation, as there are bound to be many instances where you want to bubble a detail in more than one location on a plan. However, I guess the workaround is to do the callout as a plan callout rather than a detail plan callout. This means only that it will show up in the list with the floor plans in your browser, depending on how you have your browser organized for views. The scale and all other view settings can certainly be set the same as if the new view was actually a "detail" callout.