in command block
execute in other_dimenstion run summon armor_stand ~ ~ ~ {UUID:[I;0,0,0,0]}
tp 00000000-0000-0000-0000-000000000000 ~ ~ ~
say @e[nbt={UUID:[I;0,0,0,0]}]
Why entity if doubled?
All doubled entity have the same nbt
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duplicates MC-184268