Do not open deferral move when no move
If running balance deferral does not create a move, it should not try to open it.
This instance will be upgraded to Heptapod 1.3.1 (GitLab 16.9.3) on 2023-03-28 at 17:00 UTC+1
If running balance deferral does not create a move, it should not try to open it.