Sequence Migration: Issues in retaining spawnables data and data loss

Hello, I am unable to move a series of sequences with their master sequence across to another project. The primary issue is that what comes across either; does not align to as it was in the sourced project and much of the assets set a spawnable will not carry over. This meaning that those items will not be present in the sequences they were make spawnable in, they will be just gone. As such you cannot make is possessable.
There appears to be no documentation in regard to the movement of multiples sequences and in particular when sequences are using the same assets. If there is a way that someone would know that I can get this to work, I would be most appreciative.