yep, tested in 8.4 2018-07-26 with no hals, single contract with 3 lines. The contract was never unOKed. Only the first line gets invoiced, all other lines are never invoiced. Will try to report a bug.
So the mystandard have gotten a face lift.
So when the backup is triggered, thats the time when a "snapshot" is taken from the system and written down to the backup (.TXT file)...