So whenever I get a new patreon build I have to start all over again or can I just transfer the old save from the previous version to the new version saves ?
The patreon build is a build that's in development so there will be changes to the database (character balancing, new enemies, items etc.) so older saves won't 100% work on newer builds. I always make a pre-played save in each build to make it easier for my supporters to check out the new content. I know it sucks, but that's how game development with this engine works.