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#31
Yes, that should work. I've used it myself on my test machine (System Two below).
Generally, a manual upgrade using install media downloaded from Microsoft is a more reliable method than using the update assistant. I suggest you wait until version 1803 the Spring Creators Update is released some time in April then download the media and try an in-place upgrade using the methods in this tutorial.
Repair Install Windows 10 with an In-place Upgrade