Thanks for taking the time reaching out here for help, ScraPerfect.
I'd be glad to help you with importing your data to QuickBooks Desktop. Let me share insights when importing data for such a long period might cause your computer to lag.
I'd suggest creating a backup file to keep a record of the transactions. Once done, we can now start importing transactions in batches to QuickBooks for Mac. Let's make sure that we already have the Customers, Vendors, classes, and item in your Company file to ensure the process works well.
We'll import invoices and do the same process for each of the transaction types you import. Here's how:
To create your spreadsheet:
- Choose File > Import > Transaction > Invoices.
- Click the Gear menu in the lower left and choose Export Table Template.
- Type a name and save the template to a location.
- Open the template and add your information, then Save.
To import transactions:
- Once your transaction is ready, copy and paste it into the Import Invoices window.
- If everything looks right, click Import.
- In the Toolbar, click Invoices.
- Check the transactions you've imported.
Please do the same process with other transaction types.
I'll be around if you need more help.
