Will the upgrade process replace the modified templates with the default version or will they remain as is?
During the upgrade process you overwrite the existing files with the new templates.
Your changes will need to then be reinstalled on the new builds as we update then with each new version.
It's important to note that, as we did not perform these changes to your forums we cannot support systems affected by your code changes.
Most of us with modified forums use Beyond Compare to diff our existing forum with it's stock build from the install archive to note all charges to the forum base then integrate those charges in the new version.
