Invoices has no causality.

Inner joins can return duplicate lines in some cases.

Do small batches.

Additionally lower registration priority in order to minimise duplicates.

Also make activity per person.

Source and destination have to be defined (also for section).
Source and destination have to be different (also for section).

Source and destination have to be defined (also for section).
Source and destination have to be different (also for section).

This migration runs without any interactions, so trigger manually applied rule
update after document modification.

It will be done later anyway.
Fix typo.

First stabilise orders.
Then during linking update linked packing list
Lastly while playing with non linked packing list set correct specialise.