To support the offline work and reduce the volume of downloads from the server, Deskzilla works with the local database and all the information available in Deskzilla is taken from it. To ensure the information in the local database is always up-to-date and has all the recent changes made in Bugzilla, Deskzilla regularly sends a request to the server to get the change log and if necessary downloads all the recent changes. By default this synchronization is ran every 150 seconds (if there is a server connection). Synchronization runs in the background and since the updates are done regularly the amount of downloaded information is usually small and does not affect application performance.
When adding a new connection select only the products you are going to work with. This will reduce the local database size and time required for its update.
Loading configuration
When a new connection is added Deskzilla downloads its configuration (version, workflow, products, components, etc). Every 12 hours Deskzilla automatically checks for configuration updates and if there are any changes, reloads configuration from the server.
You may need to reload configuration manually. For example, you know that the configuration was changed and you need to work with those changes (for example, a new version of the product was added). To reload Bugzilla configuration, select the connection to update and select Reload Configuration from the Connection menu or press CTRL + F5. This will download both configuration updates and bugs changes.
Queries synchronization
When a new connections is created all its queries are unsychronized. When a query is ran for the first time Deskzilla runs it on the Bugzilla server and retrieves all the bugs the query contains from the server. After this is done a blue label next to the query will show the number of bugs it contains 
. Naturally all sub-queries of the synchronized query are also synchronized.
It is recommended to run the All Bugs query when a new connection is added. It will take some time, but since it is the root query and contains all the bugs, all other queries will be synchronized as well and from that moment you will work with the local database only, which Deskzilla will continuously keep up-to-date.
When running a query Deskzilla downloads most of the bug details, however some of them are downloaded later, when you open a bug details.