Odoo CE Migration from V11 to V14

Job ID: 30968805

Budget: $750 – $1,500 USD

I need to do a migration of Odoo database from version 11 to version 14. These are the modules that I need to migrate:
-Sales - 200 Sales order
-Invoicing - 20.000 Customer bills
-Purchase -2.000 Vendor bills
-Contact - 13500 Contacts
-Inventory (With Images) -5800 Products

The thing I am more interesting is migrate all the attachment that invoices have. Because each one has at least one attachment.

All is for Odoo Community edition.
Related categories: PHP Python Software Architecture ERP MySQL