Will they be in the member group? If they are not in the group 6 and they haven't logged in within the specified number of days - then they are elibible for deletion.
If you want to add the admin & moderator groups (they are groups 1 & 2) you'd adjust it like this:
AND U_Groups NOT LIKE '%-6-%' AND U_Groups NOT LIKE '%-1-%' AND U_Groups NOT LIKE '%-2-%'
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