I have a single 18.04 machine that is stuck on that, because it has 18.04 386, and as 20.04 doesn't support 386 anymore, apparently there is not a simple upgrad

I have a single 18.04 machine that is stuck on that, because it has 18.04 386, and as 20.04 doesn't support 386 anymore, apparently there is not a simple upgrade path to 20.04 64-bit (without doing extensive surgery). Very annoying...