Thank you for this feedback, I too have used these commands and it works well!
I also had some blocks that I had to replace manually including the coffin and also a wire mesh that I had put on a barbecue, the wire mesh block still exists but we can no longer put it horizontally. And we can no longer place a backpack block on a wall
A little more annoying the custom settings of lights are correctly loaded and the effects too but the color of the block itself remains white. At worst I would copy the parameters to another lamp then put a new one and re-copy the parameters, that should do it ... Anyway I have to review my lights for better performance ...