It's been a bit of a wild ride - I took advantage of the forced software upgrades I needed to make a week ago (for that PHP vulnerability that was all over the news) to also upgrade a few of the servers that renshuu uses, and it has taken a bit of extra tinkering to make sure the settings for the new(er) servers all lined up, which was causing the issues.
I cannot say for sure until I watch it, but both servers I planned on upgrading have been fully upgraded, and all the configuration issues I have been seeing are no longer popping up, so I am feeling pretty confident.