Import tracks from project bus assignment

Anyone else experiencing when importing tracks from project, the imported tracks lose their input bus assignments? Trying to bring in a number of tracks but they all have wiped out input bus assignments in the Inspector even though I HAVE the box CHECKED during import.
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I am about to post a new thread with a similar issue, in my case all of the midi tracks lose their routing. I believe I didn’t lose bus routing however. I assume you brought in all the necessary bus tracks with the import? Hopefully someone else can weigh in on this for you.