Deleting Checkpoint subtree in Hyper-V started merge on live machine

Background:
Physical Host: Windows Server 2012 R2
Virtual Machine: Windows Server 2012 R2
I've been reading online about the fact that you need to delete snapshots/checkpoints for performance rather than leave them lingering forever. Sadly what little information I've found online seems to be inaccurate. Some people say delete the checkpoint
then power off the machine. Others say Delete the checkpoint subtree and then SHUT DOWN the machine, not power off.
While the latter seems to be more accurate than other blogs I've read, it still didn't seem to be entirely accurate. Deleting the subtree seemed to start the merge before I even had a chance to shut the VM down. I saw the status in the Hyper-V virtual machines
pane and it immediately started merging.
It appears to have worked out fine, but I am curious if this is normal. I am wondering if the blogs I read are specific to older versions of Hyper-V (2008), as they don't quite have a date or other indicator on the blogs.

2008 you had to shut down (or turn off) the VM to start the merge process. Change was made in 2012 to start the merge process without shutting down the VM.
. : | : . : | : . tim

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Deleting Checkpoint subtree in Hyper-V started merge on live machine

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