There were failures but if you look closely the deployment shows that the second attempts completed successfully.
Setting Node:23 SceneID:61 Dimming Duration:00:00:00 Level:50 (This was Attempt 1)
Failed Setting Node:23 scene configuration (You would get a popup msg here that asks you to retry)
Setting Node:23 SceneID:61 Dimming Duration:00:00:00 Level:50 (You hit retry and Attempt 2 completed without failure)
Setting reverse association info in device:23
In regard to why it programmed more devices, there is no way to determine that you did not make any changes since the last deployment. You must have made changes, then saved the file and forgot you made the changes. Then when you opened the file again and made more changes and programmed the system, all the changes that you made from before will now be sent through the deployment.