# Migration from 3.2 to 4.0+

There is so much overhaul in the commands that i can not explain.

* Advanced Command System has been added.
  * Chance and Weight system has been added
  * Separate executors has been added. Now you can execute as player.
  * Added orders to commands.
* Tab Completion
  * To make everyone's life easier.

There are big changes in configuration so you have to migrate it.

{% hint style="success" %}
You can use /aetherpotions migrate \<potionid/all> to migrate singular potion or all potions at the same time. If nothing goes wrong, it will successfully migrate to new version.
{% endhint %}

{% hint style="danger" %}
This command will only cover advanced command system because it is a complete overhaul and %1000 breaks all old AetherPotion configurations. Small feature removals/changes such as original effect removal etc.. will not be covered by this command.&#x20;
{% endhint %}