After several tries, I am happy to report that I was able to resolve the issue by following these steps:
1. Open the UFile 2018 file.2. Click on the "Tax Return" tab and save the tax return in PDF format.3. Save and close the Ufile 2018 file even if you have not made any changes.4. Open UFile 2019.6. Import the saved Ufile 2018 file to carry forward to 2019.
Check that all the business and rental information has been carried forward from 2018 to 2019 in step 6.
Though it may seem unimportant and unnecessary, Step 2 (save the pdf file) is actually CRITICAL. Without this step, th