Investors & landlords

Any answer on this?  I was unable to file my taxes and had to file an extension to avoid paying unnecessary extra taxes.  Can someone please explain how I get Turbotax to apply my carryover losses properly?  I went back and turbo tax has always been applied these carryovers.  This year it did not and I want to know if there was some sort of change in tax calculations or if this is a bug.