Try changing destination flag from destination-flag= Flags-1.png to destination-flag= Flags-19.png
{{Migrating Ancestor|origin= Ireland|destination= New Zealand|origin-flag= Flags.png|destination-flag= Flags-19.png}}
That is a good question - I have not found an easy way I googled WikiTree New Zealand Sticker Scrolled down and clicked on the flag image Scrolled down again and found this code: {{Image|file=Flags-19.png |caption=Flag of New Zealand 1902 – 2023 }} Also Try here: https://www.wikitree.com/wiki/Category:Flag_Images New Zealand is under the category Flags of Oceania Hopefully someone smarter than me will show us a better way to get there. Darryl
clicking around from https://www.wikitree.com/wiki/Category:Flag_Images is good
you can also check Space: Flags
and the Relationship Stickers space page has a section on Images.