Rex PQ massive experience exploit/glitch

So... There's this other glitch... that works on all channels, involving Rex PQ. O_o

If you make an expedition and go in, then split your 3 people into 3 differerent parties and go into the cave at the end 1 at a time, you and press and hold up on the portal and every 30 seconds, you get 89k EXP.

At least, this is what this one guy is telling me. I may be understanding wrong.


Edit : The boss doesn't need defeating on this one; apparently Shamos doesn't even enter the cave with this glitch.

Apparently, this particular glitch has worked since as early as the 8th...