Previously Sent Versions
You can review the contents of the previously sent RMDs using the buttons at the bottom of the screen . These arrows are not enabled until you have one sent version and have generated a further RMD. The left arrows show the previous sent version to the current one, and the right arrows the next version.
This allows you to edit the current Pending version and then Send.
You can also display a previously sent version and right click and select Revert to this version before selecting Send.