Template Version File
Every process template has a template version file, named version.txt, located in the root folder of the process template.
Each version file contains a GUID uniquely identifying the process template. When you customize the process template, you must change the corresponding version file to give it a custom GUID unique to your custom process template. The installer will use the GUID in the template version files to identify the standard templates during upgrades. If you do not give your custom template a custom GUID, the installer may overwrite your customized version with the standard version.
The template version file also contains a version number that you can modify to keep track of your updates and changes.