LSMW wont work for this, since each package have different tests in different sequences.
As I said, imagine that you have a test package with 30 testes in it and now you have to move the last test in the sequence to be the first one. You will have to move it up one by one. Now imagine that you have move almost all the tests in different sequence, still you will have to move one by one up and down in the sequence. SAP could have imagine a better solution for this.