Hi,
I have checked the current live site and I will migrate your complete Magento online store to new 2.3.1 as per your guidance so the complete site with same design will be on new Magento 2.3.1.
After complete migration, all the products, Categories, catalogs, order's, customers, etc will be come with new Magento store.
I am an expert self-motivated and hardworking Magento developer having +8 year experienced for both versions: 1.9 & 2.0.
Also, I have +5 years of experience as a Linux Administrator.
My Skills in Magento :
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--- Magento: 1.9 to 2.0. X
--- Install and Configure premium Magento templates as per specifications.
--- Installation and configuration of Magento Community, Magento Enterprise and Magento Go.
--- Create/Modify custom templates according to need.
--- Can install extensions.
--- Multi-vendor
--- Marketplace store
--- Custom module
--- Can add products and categories Subcategories, Filters, Sorting, and Quick search, user logins, etc.
--- Also can customize the Magento commerce functionality.
--- Complete Magento development like custom Magento development,eCommerce stores, Blogs, Communities etc.
--- Merge Magento with WordPress, Smarty etc.
--- Integrate different Payment Gateways like PayPal, Google Checkout, and etc.
Regards
Karuna S.