Waypoint modify to entity in another dimension show the waypoint in the executor dimension too

The waypoint command allow modify waypoints from any entity, if the entity and executer are not in the same dimension the waypoint command show a waypoint in the two dimensions unless (singleplayer) you join again to the world

Steps

1. Go to nether using portal

2. Make a forceload to the chunk /forceload add ~ ~

3. Spawn the armorstand /summon armor_stand ~ ~ ~ {Invisible:1b} and take the ID

4. Add the attribute /attribute UUID minecraft:waypoint_transmit_range base set 9999999999

5. Go to Overworld

6. Run the waypoint modify /waypoint modify UUID color aqua

7. The waypoint show now in overworld and also you can get with /waypoint list

Reference: https://github.com/PaperMC/Paper/pull/12933