If ThemeBuilder changes are not showing as expected on your server, it can often help to clear the theme engine cache. Clearing the cache can be done without affecting users; although, if all caches are cleared using the Flush All option, the server may need to re-index. The steps below explain how to clear the cache:
Go to the Confluence Administration icon and select General Configuration.
Click on Cache Management in the Administration section of the left sidebar.
Find the cache items that start with
adaptavist.theme.engine, and flush each one by clicking Flush in each item’s corresponding row.
You can flush every item that starts with