We are using a sprint board and our sprint report is only able to use the last column of the board which we have as, "Accepted" (where our PO accepts the work). We also have a column, "Done" for when the dev team has completed the work. The sprint report does not burn down work when in either column, only when it is in the last column. Why doesn't the sprint report allow for status category = done as the flag to burn down work?