Let me help you with printing your 2018 W-2, FMI.

The QuickBooks Desktop will print your previous W-2 using the form for the current filing year. That's why it's showing 2019 instead of 2018 even though it has the 2018 data. 

If you archived this form when you file it last year, you can pull it up in the Saved Filings tab. This will give you the 2018 W-2 form.

1. In the Payroll Center, go to Payroll tab, then File Forms tab.
2. From the Filing History, select Saved Filings.
3. Locate the 2018 W-2, then click the link under the Saved PDF column.

In addition, you can also download the 2018 W-2 form from the IRS website and manually fill it out. You can just pull up a tax worksheet from QuickBooks for your reference.

1. Go to Reports menu.
2. Hover over to Employees & Payroll, select More Payroll Reports in Excel, then choose Tax Form Worksheets.
3. From the downloaded Excel file, select Annual W-2/W-3. Then, change the year to 2018.
4. Click Create Report.

I want to share this article about printing W-2 and W-3 forms for more details. 

Feel free to post again here if you need more assistance. I'll be glad to assist you.