Hey all, I'm back with another likely dumb question about editing in Halo CE, but one that nonetheless has me totally stumped.

I'm currently using two computers - one to edit on and one to play on, as Sapien crashes on my main desktop machine. I placed a couple of custom weapon tags in the Tutorial level to see if they were working, saved the level, used build-cache-file to compile into a map, loaded up Halo CE and played. I got in-game, and lo and behold, my custom tags spawned in and worked flawlessly. Confident that everything had gone to plan, I transferred the map over to my main computer to play properly.
And this is where my query comes in - when I loaded up the level to play on my main computer, none of my custom tags spawned at all.
I know from experience that maps have all their tag data embedded inside the file, so I'm not sure as to what I have done wrong. I feel like I'm possibly missing a step, but am unsure as to what.

As usual, any help would be greatly appreciated!

You are running an odd gametype on the main machine by accident?

Nope. Have the level type set as multiplayer in the scenario's attributes and I'm just running vanilla Slayer on both machines.