Currently if the OD interest rate is updated for the working plan that flows through to the Baseline Plan and it seems the amount of interest related to the forecast OD balance also flows through to the Baseline Plan so it is never truly "locked". I have had $40k changes in the interest from when the Read-Only Baseline Plan was set to 4 months later which is significant and makes a nonsense of it being a locked plan, and being able to compare changes from start of year to the updated forecast as the year goes on.

The same issue happens where the Baseline Plan is based on the first month or two actuals in a year then the forecast, and even though it is supposedly locked, if changes are made in the actuals, these flow through to the Baseline Plan.