The software allows the taxpayer to roll forward previous year's return. What does that mean?

Roll forward previous year's return will create a new return in the current tax year with the Identification information already filled out. This feature brings forward any capital/non-capital losses, business-use-of-home expenses (if you are self-employed), tuition credit, UCC at the start of the year (for CCA calculation), among others, from the previous year's return.