I think this points out the fact that when changes are made, no matter how seemingly minor, thorough re-testing should be done prior to moving those changes into production. I've been having this go-round for the last 5 months with an area that made several "minor" changes to a process and it hasn't run right since then. Honestly, the whole process is quite the Rube Goldberg contraption. I didn't come up with it, just inherited it and have to support it (*heavy sigh*).