That is exactly what the Manager module is for.
The Manager module.
The Manager module provides the ability to copy “Elements” from a Source Set/Project to a Target Set/Project.
Elements can be copied at the Project, Bank, Pattern, Track, Part or Scene level, from any Project in any Set to any other Project in any other Set, and includes the ability to remap sample assignments on the fly.
Boasting a feature set that is way too long to list, with just a couple of clicks entire sets can be merged together seamlessly, meaning you never have to worry about the Octatrack structure ever again.