Help needed; Watermarks on ABU?

I've been in the process of building an old-school '96 cube for my personal use with MSE to have updated rules text and errata's to the older cards in MTGs history. I want to have every card in the style closest to its original design with as few changes as possible (proxy marked, custom set symbol, oracle text, ect.). 3 of the cards I have in here are City in a Bottle, Golgothian Sylex, and Apocalypse Chime; they all have the gimmick of removing all cards from Arabian Nights, Antiquities, or Homelands sets respectively. Normally, you just need to look at the set symbol to know if you need to remove it from play, but I don't have the ability to have multiple set symbols within one set. So I had the idea of putting a watermark under the textbox with the set symbol much like what WotC did in 2XM.

I checked the watermark image files (\mse2.1.2\data\magic-watermarks.mse-include) and the existing set symbols were there. I went to set info, watermarks, and set the first three to be Set-arn.png, Set-atq.png, and Set-hml.png. However, as I go back into the card editor to select my custom watermark, it doesn't show up on the card. I checked some of the other ones and they worked. I changed to M15 style and I could see all of the watermarks. Change back to ABU style and it disappears.

ABU with future sight artifact watermark:


ABU with Antiquities watermark not showing:


M15 with Antiquities watermark working:


I'm guessing this must be something with the ABU style, but I'm hoping someone has a possible work around to this. Or if someone has made an updated ABU style that works with watermarks, that would help me a bunch.

Thanks to anyone who may want to help!
-Crit

ps- first forum post