I started up a Super Mario Mashup world trying to recreate something I made on the 3DS, but when I start up the world it just shows the normal texture pack. I have made sure that it's on, I took it off and put it back on, I restarted the game I restarted my Switch, but nothing happened to fix it. I don't know what the problem is.

It's asking me to specify the device, so I'm on Nintendo Switch, not the Lite, using version 11.0.1