How to fix/use old unions?

So I’ve been working on a relatively old roblox place and quite a bit of it consists of unions, but as far as I am aware they were made in CSG V1 as they don’t work with CSG V2 but are definately not corrupted as they haven’t disappeared over the course of several publishes and saves, and the physics still work with them.
Is there anyway that I can get these to work or transfer them to CSG V2? I’ve tried using CSG V1 to seperate them but I get an error to do something with a 32 bit limit error or something to do with the 32 bit limit.

Hi!
Typically you can un-union CSGV1 with CSGV2. If you can’t do that for some reason, I think you might be out of luck.