Module customization
The module has a system to verify the integrity of the installed files, in order to check if everything has been properly installed and show a warning for any modification.
If you want to customize the module code, is necessary to specify at saleslayerimport.php that the modifications come from a developer, with the following variable:
public $i_am_a_developer = false; //Set variable value to true
Once the necessary changes, you will only need to activate the debug mode and refresh the page.
The process will then generate a new file mapping so the plugin can accept the changes and refresh the module's integrity.
For security reasons, we suggest deactivating the developer mode once the edition has been finished, as the developer mode allows the bulk erase of PrestaShop content.