Import track function is awesome, but is there an issue? or I need advice

Just two words to tell that I’m working a lot with this function that allows me to import only channel and inspector settings (inserts, groups, sends…) and merge in existing tracks with the option to decide source and destination. This feature is great and priceless.
All works fine for all tracks but not for the master out. If I select the “All inputs/outputs” to load the master out chain from one project, then nothing is loaded in the master out chain, also if I select correctly source and destination (not new track option).
After trying this, the folder on the project window that usually contain the master out track become empty.
I’m missing something? Is this an issue?