Help, Blockbench switch model type texture messed up!

I made a custom model for a Guardian from Zelda I want to add into a mod using Blockbench, but I realized I made it a Generic Model and not a Modded Entity. I converted it to a Modded Entity using File > Convert Project, but the texture is really messed up. I'm pretty sure the UV overlay switched shapes, so is there a way to keep it as a Modded Entity model but make the texture/UV match?

I'd really appreciate any help anyone can give.

Picture of both Generic and Modded entity. Generic on top left, messed up one is... messed up.