List.Contains list not working

Hello. I am trying to find the index of a sublist of 4 points in a master list so that I can replace it with a different sublist of 4 points. The master list is 4 lists of 23 sublists each containing 4 points. The search list is 4 lists of “n” number of sublists of 4 points. Need to be able to find the location of the search list in the master list. I can search by each sublist contains any of the 4 points but I cant get that to work either. anyone have any ideas what I am doing wrong?
Thanks in advance!

Check this one:

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Hi! Could I ask what package the List.ContainsList node is from?

Many thanks in advance.

@thomas.lundUUGP8 It’s from Ampersand
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Thanks