Hi Judy101.  

Thanks for getting back to us here.  The experience you've described is not what we would expect.  Having the ability to print clear T4 slips is essential.  I suggest contacting our QuickBooks Desktop specialists at the number provided here, so they can review the unexpected outcome in more depth, and escalate it for further investigation if required.

If any other questions come to mind, feel free to reach out.  We're here for you!