Improve performance when updating a Backbone configuration
Description
At the moment, when updating an existing Backbone configuration, we're not using the date of the last time we've performed a sync. However, we're using this date for our regular syncs in order to only detect the last updated issues. In order to speed up this update process we should use the last sync date here as well. This can improve the update time if a project has a lot of issues.
At the moment, when updating an existing Backbone configuration, we're not using the date of the last time we've performed a sync. However, we're using this date for our regular syncs in order to only detect the last updated issues. In order to speed up this update process we should use the last sync date here as well. This can improve the update time if a project has a lot of issues.