@DavidT I would say that you should test the project thoroughly, and if possible, remake the change to avoid potential issues, however you are unlikely to encounter issues once you've tested the project. If there were changes to the project files made by the later build, it is unlikely those changes would even work in an older build and would cause obvious issues. In my experience, the changes made in later builds are mostly additive, so even if they added something to the file, that value is likely to be ignored in older builds.