is there something that will convert SS1 to SS2?

I doubt it, but there is a 1.0 to 2.0 mapping in the help pages, just search for

1.0 to 2.0

Thanks

if you used NFT, most of your code is already 1.0/2.0 compatible.

I've toyed with the idea of writing a codemod, but hasn't progressed further than idea stage