Comment 15 for bug 1788098

------- Comment From <email address hidden> 2019-01-24 09:26 EDT-------
By suggestion of Michael Ranweiler, I did some concurrent migration tests.
In fact, I just repeated the procedure used before, but did it twice at roughly the same time (in parallel).

The results are attached.
Migration 1: from1.txt to1.txt
Migration 2: from2.txt to2.txt