Word 2016 - Split Numbered List to Restart from 1

Select lines starting from with number 3, press right mouse button:
Select Restart at 1
result:

OK, I tried it; however, Restart at 1 is grayed out.
 
 
Could it be b/c my list contains multiple levels?

Thanks!

OK, I just tried again. And, it SEEMS that if I selected ONLY the first line, it worked. Need to confirm later...rushing out to client meeting.

Does the above make sense? :)

Thanks.

Can you upload sample of your file? May be problem is in multi level numbering

als315,
Thank you for your offer. Here's a test document that demonstrates the problem. I created it in Word 2016 (Win10). Please try with per item 3.

I'm thinking that the solution may simply to highlight the single item where you want to restart the numbering. Perhaps, that was Microsoft's intent. Intuitively, it would make sense, since, when you think about it, a "restart point" is really only one item, not a series of items....

Thanks.
Restart-Numbered-List.docx

I was able to renumber if only one line is selected:

Excellent.

In that case, can I please ask a favor?

Re-post your original solution. Indicate in your post that you select only that one line. That way, I can give you full credit for your answer without referring to multiple posts. :)

Thanks!

It is not possible to edit comment, which is followed by other one. You can accept one comment 41722160 as an answer or 41722160 as an answer and 41718159 as assisted

How about if you re-post the first comment with the correction I suggested? In that case, I'd accept only that new comment. I think that would be clearest to anyone reading your solution. Thank you.

Excellent! Thank you for your patient help!