In this demo project i tried to move a model between app. With this approach:

• all the operations are working on models in their own apps
• reverse migration working
• squash migration working

In new app, migrations can be applied on empty database simply by removing old app dependencies and changing state_only_op to false in squashed migrations. some migration and dependencies are commented for squash migrations to work correctly(on empty db). I have also added migration graph for this demo project before squashing migrations(here) and after squashing migrations(here).

state_only_op is a flag which allows us to choose wheather an operation should be applied on db or not.