How does SD treat TechTool Pro 4's eDrive
 

So that you can repair the boot drive, TechTool Pro 4 can create an "eDrive" on the boot drive onto which it installs a system, TechTool Pro, Safari and several other things into a 7GB partition that, when completed, "disappears." It reappears briefly upon each restart but again disappears when you get to the desktop. So… how does SD treat the "invisible" embedded eDrive? Does the bootable SD backup contain the TechTool-bootable eDrive or it invisible to SD during copying?

Since it's a separate partition, it would only be copied if you selected it.