Your position of "whatever date for sale that you want to use" does not conform to the Form 8949

Instructions. At page 3-4, under exception 2, it is stated:  "Leave columns (b) and (c) blank."

Putting in a date is not an equivalent of leaving those columns blank.

In the 2019 inputs for form 8949, the instructions were followed.

Please recode these inputs, so that the reporting conforms to the Form 8949 Instructions.