I have a 2020 NOL that I am going to carryback for 5 years to 2015 and then 2016 (it will be fully used after 2016).  When I attempt to open the 2015 Lacerte program and make a copy of the return to do the amended return (just for calculating the "after carryback' amounts to use on the 2020 form 1045), I get an error message from Lacerte that the NOL year has to be between 1993 and 2018.   I cannot enter the NOL year as 2020.   Am I entering this incorrectly?