Question On Building with a new splash screen, old one still shows up.

Hi all,

I'm just trying to change the splash screen for my app but the old one still appears for a brief moment upon launching the app. I've had a bit of a search around and it seems the the old one is being cached by iOS.
Apparently if you move the splash screen file into a different folder, or rename the file it will update, just wondering if anyone has any experience with this as I'm not familiar with tinkering around in Xcode.

I'm in Xcode 14 and Unity 2021.3.9f. Just using "Image and background (relative size)".

Thanks,
Pete