Sure and absolutely and yep :-)
In this case though, I assumed that maybe restricting dataobjects referred to the HasManyComplexTableField summary indeed showing each and every existing track, no matter what volume-page you're on, and I thought the idea was to only show the tracks linked to the current volume, which the ComplexTableField does... But, as said, I could easily be thinking in the wrong direction :-)
[EDIT] Oh, ok, didn't see the last post coming - importing csv does point to ModelAdmin :-)
(Sometimes I even implement ComplexTableField and ModelAdmin simultaneously, when a user finds he's more comfortable doing everything Page by Page)