Please correct me if I'm wrong, but I understood that if I upgrade, e. from 1.2.3 to 1.2.4 and I download the 1.2.4 upgrade package as opposed to the full install, it should only contain files that are new. However after uploading the upgrade and installing 1.2.4 I found that the node-sprite.png (which I had edited) was overwritten with the same file in the 1.2.4 upgrade. As far as I can tell, the default node-sprite.png file in 1.2.4 is identical, so why is it necessary to include in the upgrade? Of course I had a back up of my edited file so this is not a disaster, but it would be useful if the upgrade package only included updated files for the new version. Or a I missing something obvious?