I’m not sure what’s going on, but two programs I’ve run many times before have had their Offset Directions change to No Offset when using the Contour Toolpath after updating to the software. I caught it on one, but unfortunately just ruined half a sheet missing it on another. Might be something to look into, unsure, but I’ll definitely be combing through all of my pre-update programs.
Could you upload a pair of files? One in the previous version which goes in one direction, the second that file opened, evincing the problem, and re-saved using the new version?
My suspicion is that the geometry had some problem to it which when fixed changed its direction.