Form 8949 "Date acquired" for home sold in a trust by trustee after death of Grantor. Home WASN'T INHERITED!

[dTrust]

The home was in a Revocable Trust and was the principal residence of the Grantor.  Grantor's son also lived in it.  Upon death of the Grantor the Trust became Irrevocable, and the home remained in the Trust.  The son lived in the house until it was sold.  The Trustee got a Date-of-Death appraisal for the home, and sold the home.  Form 1041 is being filed for the trust.

1. The only way to get the Stepped-up basis on turbotax business (desktop) is to select that the home was inherited.  Although it wasn't inherited, should I just continue as if it was inherited?

2. By choosing that the home was inherited, entering the Date-of-Death of the Grantor, the Date-of-Death value, and the sale date, the "date acquired" field is blank.  Is this blank field okay?

Thanks!