I have this same problem. Irrevocable trust (living trust). I made a 645 election. TT does not have a "step by step" way of addressing the 645. So I checked the 645 box in G and entered the EIN of the trust beneath that. However, when I checked the Decedent's Estate - Date of Death (DE) box in A , as required by the IRS, it gives an error because the Complex Trust (CT) box is also checked. I cannot uncheck the CT box, even if I first uncheck the DE box. Suggestions?
