Can Magento 1 coupon codes imported into Magento 2?

Install Data Migration Tool

1) Check your Magento 2 version :- sudo php bin/magento --version

2) Install Data Migration Tool from repo.magento.com :-

composer config repositories.magento composer https://repo.magento.com                                   
composer require magento/data-migration-tool:<magento_version>

3) Configure Magento 2 Data Migration Tool :-

    1 The above file will contain configuration and scripts for migrating from Magento 1 Open Source platform to Magento 2 Open          Source platform.
         <your Magento 2 install dir>/vendor/magento/data-migration-tool/etc/opensource-to-opensource

    2 The above file will contain configuration and scripts for migrating from Magento 1 Open Source platform to Magento 2 Commerce.
         <your Magento 2 install dir>/vendor/magento/data-migration-tool/etc/opensource-to-commerce

    3 The above file will contain configuration and scripts for migrating from Magento 1 Commerce to Magento 2 Commerce.
         <your Magento 2 install dir>/vendor/magento/data-migration-tool/etc/commerce-to-commerce

4) Configuring the migration :-

    1 Change to the following directory :-
      <your Magento 2 install dir>/vendor/magento/data-migration-tool/etc/<migration edition>/<ce or version>

    2 Rename config.xml.dist to config.xml 
      cp config.xml.dist config.xml

    3 Open config.xml in a text editor.

    4 Specify the following at minimum:

            <database host="localhost" name="Magento1-DB-name" user="DB-username" password="DB-password"/>

            </source>

            <destination>

            <database host="localhost" name="Magento2-DB-name" user="DB-username" password="DB-password"/>

            </destination>

            <options>

            <crypt_key>Magento1-Encrypted-Key</crypt_key>

            </options>

5) Migrate settings :-

        php bin/magento migrate:settings --reset vendor/magento/data-migration-tool/etc/<edition-to-edition>/<version>/config.xml

6) Migrate Data :-

        php bin/magento migrate:data --auto vendor/magento/data-migration-tool/etc/<edition-to-edition>/<version>/config.xml

7) Migrate Delta :-

        php bin/magento migrate:delta --auto vendor/magento/data-migration-tool/etc/<edition-to-edition>/<version>/config.xml

Through the Migration tools you can have/expect all the below things are to be migrated from magento 1 to the Magento 2

• All the customers & customer information related content.
• All the products , categories, attribute sets & all the attributes.
• All the stores & website related content.
• All the orders & order related content like invoices & other order information
• All the discount rules (cart & product rules).
• All the shipping information related content.

We can say that all the content that is been saved to your database.