Here's some screenshots for the event tabs.
For the monsters:
The first one I'm not gonna show because it's just blank. Waiting to be triggered. Then, the second tab:

This monster is triggered by the switch BM7. And then yadda yadda you get the monster graphic, battle processing, then BM-7NO is to activate the third tab which just deletes the event.
Now, here's the event processing for the trigger tile:

Interestingly enough, everything in this works EXCEPT for the monster switch (BM7). The sound effects happen, but nothing else. It switches on BM7, but it doesn't affect the monster events.
Something interesting to note is that when I start the player position at this area to begin a new game, it works just fine. But playing it through? Nope. Suddenly it doesn't work.
I have no idea what's going on and it's really bothering me.
Any ideas of what to do?