So, I tried it too, and it worked. Perhaps there are some Parallel-Process events blocking the other Event.
Btw I don't even know a command called "Phase on" ^^°.
That's what I did:

Start Slip Through


Rest of the "Move Event"


Move all


And finish (it works! (no matter what ID the ground has...)



Don't know what you did wrong. Just controll it again ^^


mfg
Phönix Tear


P.S.
Das mit den großen Bildern tut mir leid. Habs erst jetzt gemerkt