Not showing old migrated content in website

Did you change the paths in Database and config files properly ?

Could you please proceed the below checklist for find the issues:

  1. Back Up Your Website’s Files

  2. Export The WordPress Database (using wp-migrate db plugin avoid some conflict )
    refernce url : https://wordpress.org/plugins/wp-migrate-db/

  3. Create The WordPress Database On Your New Host Server and import the DB

  4. Edit the wp-config.php File ( Change The Database Name, Username and Password)

5.Upload The WordPress Files To Your New Host