Hi SergioM,
Welcome back to the Community! QuickBooks Online offers the flexibility you need in order to manage your business and stay on top of your transactions. I'll be glad to provide more information about importing transactions you can get back to doing what you love.
Based on the information you've shared, I highly recommend you to check out the following article that shows you how to: Import/export CSV files.
The article shows you how to import your files to your account. I encourage you to check it out and let me know if you have questions as you go through the article. It's also important to note that you can only import the following:
- Bank Data
- Customers
- Suppliers
- Chart of Accounts
- Products and Services
- Invoices
- Bills
- Journal Entries
Here's another helpful article with more info on common questions about importing data to QuickBooks Online. Feel free to ask other questions. I've got your back in case you need anything else.
