World Tour ETC works in their respective versions.
I don't know if it works in GMS, but in JMS, i farmed most of my advanced crystals from their ETC's.
Also, it's true that items that aren't on KMS usually don't work with Maker, unless the version allows it. JMS has all it's monsters etc drops allowed to be maker'd, only the level 100 ninja from Kaede and monsters from Neo Tokyo aren't allowed, Neo Tokyo case can be explained because those monsters are over level 130, which will cause them to not have a crystal.
I don't know if it works in GMS, but in JMS, i farmed most of my advanced crystals from their ETC's.
Also, it's true that items that aren't on KMS usually don't work with Maker, unless the version allows it. JMS has all it's monsters etc drops allowed to be maker'd, only the level 100 ninja from Kaede and monsters from Neo Tokyo aren't allowed, Neo Tokyo case can be explained because those monsters are over level 130, which will cause them to not have a crystal.