I've taken over work on a Backdrop site and several issues are apparent that I think may be caused by the way files have been copied between dev and host. Essentially the active config has been git versioned and copied over without any sync operation taking place. Config changes have taken place on both dev and prod. I'm trying to pick my way through what's happened and get everything working again
Are there any tried and tested approaches to getting things back on track without losing lots of work?