Will I lose my stock losses if Ttax says standard deduction filing is only option?

I have itemized deductions but Ttax is showing standard deduction for filing- will I lose my stock losses ($12k) on future gains?

I've used Ttax for several years and have the same profile when filing -self employed, have rental income, stock g/l, dividends, interest gains.., but took stock losses last year (harvested) to put toward future gains.  Will those losses fade away if Ttax says to take standard deduction when filing or will I be able to carry those losses forward?

Thanks for your help.