I would consider a single FULL DISK image (all but your System partition) just for reference purposes, if needed. From there, you can image just your System partition any way you want... and restore it to its original place when necessary. The problem with the "reference" FULL DISK image (and your SYSTEM partition) is that since Windows 8.1 Update 1, Windows, occasionally has changed that RECOVERY PARTITION (and the size of the System partition) in the process of an upgrade (just happened again in the W10 1511 upgrade). This, of course, invalidates the reference in that referenced FULL DISK save as well as your current referenced System partition. Reflect is smart enough to tell you that the size of your System partition has changed and asks you to start a new chain, but since you're not regularly imaging your RECOVERY PARTITION, you'll never know that it has changed. And when one of those partition changing Windows things occurs, it also changes the partition table located in the "System" (EFI) partition... WIndows has become a real PITA in those areas.