How does it works? I saw some paladins with monster that do not spawn in the map they were in. Does it means they do not disappear upon changing map?
they all got the Blue Goblin Mages or someting like that (looks like a cool monster to party with)
The monsters disappear if you change map/relog. Those are Oracle-Paladins. Oracles can change monsters with the Change skill… 
and also make them weaker or stronger… then you can convert them and they stay like that…
Conversion is quite annoying to use tho…because monsters can easily get stucked… and imc either likes it this way…or they didn’t realise the skill is buged…
The skill is not as much fun as it could be unfortunately…